Could well be Indycar, its a while that I watched it. Today its only on pay TV sports channels, which I don't have. I only see snippets on YouTube sometimes.
Btw, full coverage on YouTube has a new, interesting racing series: Formula E. You may have guessed it... yes, E is for electric. They are making a good show with that. Lots of famous drivers in it, mostly former F1 and Touring car guys. And one of the commentators is Dario Francchitti (yes, the scottish guy as the name suggests) the Indycar champion and Indy 500 winner ect., 20 years back or so. They just had their big season finale in NYC - if you want to take a look:

If they are on fire, water would not be such a good idea, I guess. Although, they can drive in rain and all.

Perhaps you should check in your garage or the attic, if there is a old barrel in a corner still. Might be a good time to sell it now. :)