I will never "reward" myself with a car.
A car is simply an appliance to get from one place to another. Saving up a bunch of money to buy an overpriced car is simply making me poor and making someone else rich.
I'm 27 and I drive a '94 Dodge Dakota 4x4 with 140,000 miles (I bought it last summer for $2850). Last summer, I sold my '93 Dodge Dakota 4x4 with 213,000 miles (that I bought three years ago for $3650), and I plan to drive the '94 just as far. I enjoy not having a car payment and the insurance for my '94 Dakota is just $320 per year for full coverage.