Well, after having passed the Flight Skills Test, the driving test should be a doddle. 40 minutes with some old guy with a clipboard and no chance of a PFL or weather diversion! Just avoid stalling and spinning. I think that if you get a pilot license before you learn to drive, you're probably pretty safe in control of a vehicle and should get a license by default.
I'm no expert on USA flying, by the way, I only have about 8 hours in an N reg. Mind you, I won't let this stop me passing an hour or 10 talking about it!
By the way, your profile says your only 17. Unfortunately, one of the highlights of spending a few weeks in California is hanging out in bars impressing all the babes with your English accent (and a pilot license too!) - still, you'll be old enough in 4 years!