What is the difference between Formula 1 and IndyCar?

May be...

Formula 1 is a world series, the fastest drivers in the fastest cars.
NASCAR and Indycar are American racing series.
F1 cars don't race on oval so they don't reach the sort of speeds Indycars do, but on a road course they're much faster.
They do however reach speeds as high as 223mph on the straights of Monza which is pretty impressive.
Montoya's pole position in an F1 McLaren in Montreal was 6 seconds quicker and the fastest lap in the race was some 8 seconds quicker than Indycar.
Indycar races are a mix of road courses and ovals while NASCAR races almost entirely on ovals.
Formula 1 and Indycar are formulas,NASCAR are basically heavily modified cars, they're heavy and rely on good aerodynamics (full bodywork) and long straights to reach high speeds on ovals but are slow round corners and on the brakes so in reality on a road course they're slower than even most Touring cars.
Top Fuel dragsters are the fastest for acceleration and top speed, they reach 320mph in 4,5 seconds which is insane.
F1 cars are known for their high downforce which allows for high cornering and braking g forces, in excess of 4g.
They're also the most difficult racing cars to drive on a road course because their dependency on aerodynamics makes them extremely unforgiving.
Tom Cruise raced in NASCAR in "Days of Thunder".
Personally I like that movie very much,I like the plot and the characters much more than the silly action.
Hollywood wanted to make a movie out of F1 but when the powers of F1 read the script thir hair turned grey and they turned it down.
The producers then turned to poor Indycar as an alternative and the monstrosity that was created is known as "Driven".

indy car racing or Indy Racing Leauge(IRL and F-1 are whole lot diffrent(except they look quite similar but only for somebody who's never watched an f-1 or indy race!!! )....f-1 cars are much quicker on corners compared to indy cars....though the straight line speed of an indy car is more than an F-1 car.....as indy cars are aerodynamically designed to run on straigts or ovals(almost straight!!!)...but f-1 cars are aerodynamically and mechanically designed to run both on straights,hairpins,left right chicanes....and other diffrent curves of shape and sizes;-)....and the fastest sport is drag racing especially the one which takes place at the salt pans in the daytona beach in i think somewhre in california......but there they dont compete against each other rather most ppl come there to create or break land speed record......

so the fastest racing sport in straight line category(tht's on land) would be drag racing
and on circuit it must be indy(ovals are circuits too!!)
but in over all thts straight line + cornering speed goes to F-1....!!!!......hence its the pinnacle and the most famous motosport ever....

and NASCAR is similar to indycar as it too goes round and round on that oval circuit.....NASCAR stands for 'National Association for Stock Car Auto Racing' ....its called stock car cause in the olden times the vine sellers used to modify their cars to optimize ae their vine delivery service quicker...when their business dried up for various reasons they started racing their cars and as the cars were generally stock cars modified,the racing came to be know as stock car auto racing....but thts changed now a days and now we dont have modified stocj cars rather we have specially bult cars for racing in NASCAR...and stock car has just become namesake.....

hope u got ur answer!!! ;-)

I know its not the technical answer you would like but precious little displays the difference between the two than SAFETY. Look up the fatal crash suffered by my favourite racer Greg Moore in 1999 on You Tube and ask yourself if this would ever have happened in F1.
Needless, reckless and unsafe, although part of the excitement -it counts for nothing when talented young drivers die for pure stupidity and lax regulations.
Greg, RIP matey.

Formula One cars currently have 2.4 liter V-8 engines that run on gasoline and are restricted to something in the neighborhood of 19,000 rpm. Indy cars have 3.5 liter V-8's that run on ethanol and are restricted to I think 10,000 rpm. They both develop roughly similar horsepower though it is a safe assumption that the rev-happy F-1 cars are probably much more difficult to drive.

I always thought that F1 was the fastest motor racing sport ever but I've heard about IndyCar. What is it and is it faster, what are the differences between IndyCar and F1.

Also, as a side question, is IndyCar racing what Tom Cruise does in that film Days of Thunder?

What is the fastest racing sport ever, is there something even faster than F1 and IndyCar? If so, please tell me.

I will give maximum marks for a fully explained detailed perfect answer. :-)

It depends what you class as the 'fastest'. If you are simply referring to top speed, then Indycar is the fastest. Indycars can reach speed of over 240mph/388kph where an F1 car tops out at around 220mph/340kph. This is because a Indycar is tuned to be raced on ovals where top speed is essential.

However, on a normal circuit a Formula 1 car can obliterate an Indycar. It has much more downforce and better handling characteristics to allow it to do this. Because the Indycar has low downforce, to help with its topspeed, it does not have good grip through bends and looses out a lot.

In reference to 'Days of Thunder' this is a film about NASCAR. NASCAR is stock car racing and more popular than Indycar in the states. A NASCAR is a closed wheel car, and is basically and extremely heavily revised version of a road vehicle. In fact it is so heavily revised that it doesn't have a component in common with its road going counterpart. NASCARS usually race on Oval circuits and are quite similar in design principle to Indycars, in that topspeed is the key.

The fastest racing sport is Drag racing, where topfuel cars and funnycars reach over 300mph. But this is not a conventional motorsport. Indycar usually show off by claiming themsleves as the fastest, which they are in terms of topspeed. But around a racing circuit that is not an oval and F1 car is the king by miles. Nothing in faster round a a non oval track, where as an F1 car could cut it with a NASCAR round an oval and get within a few seconds of an Indycar's laptime.

IndyCar Racing is I believe the fastest "racing" motorsport. F1 is the so called "pinnacle" of motorsport, as coined by themselves, due to their highly sophisticated cars and machinery. Both IndyCars and F1 cars are open wheeled cars.

The IndyCar Series is a lot like NASCAR, racing mostly on ovals that NASCAR does. To compare an IndyCar and a Formula 1 car as well as a NASCAR stock car check out this link: http://www.indycar.com/tech/specificatio...

F1 cars race on road and street courses, and their championship is I believe similar to the old NASCAR points system where whoever gets the most points wins. You know, whoever's the most consistent is the champ. Their numbers are decided by their ranking in the previous championship. (ie, the champ gets number 1, teammate gets number 2, etc.)

The NHRA Drag Racing series is the world's fastest, with their top dragsters going in speeds of 300+ mph.

In the movie with Tom Cruise, he portrays a NASCAR driver, named Cole Trickle. I really thought the movie was bad, it was a big misrepresentation of the sport.

NASCAR was started in the late 1940's by Brian France Senior, who organized a racing organization with a committee in the Streamline Hotel in Daytona Beach. People used to run from the cops during that time running moonshine, but once the ban was lifted, they had nothing to do, but well, race their souped up family sedans against each other. The Daytona International Speedway was built then finished in 1958, then called a "revolution in motorsports." The sport grew in the southeast, but slowly expanded during the 70's through a HUGE boom in the 90's due to the CART/ IndyCar split. Today, 17 of the top 20 attended sports events in the U.S. are NASCAR races.

Wikipedia also is a great place to look, but again, it's wikipedia, so there might be some false info. Also try looking up the official sites, you know, browse history, info, etc..

Here's a tidbit: If F1 cars were to run on a NASCAR oval, they wouldn't nearly go as fast because the cars are designed to go faster in the turns, the tracks are usually fairly flat. Straightline speed isn't as fast as you would think.