Warning: When attempting this position, make sure the car engine is off and the parking brake is engaged.

Straddle the gearshift with one foot on the floor on either side of it. You may also be able to straddle it in a kneeling position, with one knee on each front seat. Raise yourself up and lower yourself down onto the gearshift until it penetrates you, or if you prefer, rub yourself back and forth against the knob and shaft to masturbate. Use your legs to raise yourself up and down or rock back and forth. Slip a condom over the gear knob for easy clean up.