Where can I watch NASCAR race live streaming coverage for free online?

May be...

you may watch in the comfort of your own home

Yup, FREE Live sports TV on http://www.nowgoal.com/14.shtml.

www.justin.tv or try http://www.atdhe.net/index.html http://www.atdhe.net/7215/watch-espn

you can go here to http://internet-tvpc.com/ and Get satellite tv software on your computer,with it you can watch nascar races games and many tv channels live for free on your PC.

Try satellite tv software,once you install it on your PC.With it you can watch NASCAR race and many tv channels live for free on your PC.Here you can get it.http://itgoogle.net/automotive sensor magnets