I've got Jamiroquai - Rock dust light star - in the car right now.
It's an MP3 disc and on it also lives Synkronized by the same artist and then the new Foo fighters album, linkin park collision course, reanimation and them from memory gym class heroes papercut chronicles and one or two others.
Burnt a disc yet to go down which is just Skrillex, Nero, the prodigy discography and some grime mixes.
If I'm "driving" I go for the drum and bass almost every time but if I'm driving, I like to go for rock or alt.
Regardless of that I'd say my favourite genre is heavy metal... In flames, metallica, machine head, fear factory, static-x etc.
Then I also go for some punk from time to time.. Bad religion, litmus green, meteors...
fair to say my tastes are varied
But it does come back to the dubstep/drum and bass quite regularly when I feel like pressing on