Static Electricity
Not a hell of lot you can do about it with dry winter weather. Slide your butt across the seat, and all us V owners are so hot that we just develope a huge electrical charge.
There is a trick though. When you get out of the car, before you put your foot on the ground, place your hand on the metal (has to be metal not plastic) part of the roof or door jam. Then put your foot on the ground. Zap right off your shoe onto the ground and you don't feel a thing. (Don't work if you have bare feet--you still feel it then.)
I lived in the Mojave Desert for 2 1/2 years and used to carry a quarter or a key in my hand when I crossed a room. Touching a light switch or faucet with your bare hand could set you right on your tushie. Touch it with the quarter, and it was painless.