I did my best searching through the forums and found a couple of topic where several different styles of music were discussed. However, I didn't manage to find any such topic about your favorite driving music. I'll kick it off!
I may be a young chap but I appreciate the good things in life - I listen to a lot of different styles of music and while I have no particular favorite rock/heavy etc. always gets me in a good driving mood. And no, I don't particularly like most new bands even though there are some catchy songs. What we have to do is share the song name and artist and explain why we enjoy it. Any extra info would help as well, possibly even a YT linky. Here's a few of my own favorites:
Billy Idol - Rebel Yell
Why? Because it's really catchy, sticks to my head and makes me quite right foot heavy. I quite enjoy it when it pops up during a night cruise somewhere, livens things up if you know what I mean


http://www.youtube.com/watch?v=ZvxLRwZEx1c
AC/DC - Thunderstruck
It has a beautiful intro, it has a rock solid sound which makes me feel about as badass as Arnie in his Terminator 1 days. It also doubles as my ringtone.. and overtaking is such a joy if it matches the moment before the chorus where everything goes quiet and then Mr. Brian Johnson shouts out "YOU'VE BEEN.... THUNDERSTRUCK"
http://www.youtube.com/watch?v=EKmYlnQv_dg
AC/DC - Highway To Hell
Reasons should be pretty obvious.. I have a thing for AC/DC's style. Their music makes me feel extremely good and, well Highway to Hell is no exception. The second verse is just beautiful!
http://www.youtube.com/watch?v=xr7fnsOtwyg&feature=fvst
Meat Loaf - Bat Out Of Hell
It is Meat Loaf, I know what you're thinking. But I have to say, as fat as he is he has a couple of great songs and I think this is his best one!
http://www.youtube.com/watch?v=8Q3H2UQYLzM