There are really only a few places to mount a handgun properly in a car. One of the best places for the driver is under the steering wheel. At first thought it seems impractical, and questions come up about exactly how to mount the gun there.
Is it out of sight? Which way do I draw the gun? Will I shoot myself in the foot? What exactly does it mount to? These are all perfectly valid questions. Knowing that a picture is worth a thousand words, this picture probably answers those questions for you.