High Friction
Complete Mission A-2 Bonus with a gold medal.
Low Friction
Complete Mission A-1 Bonus with a gold medal.
Super Steering
Complete Mission B-6 Bonus with a gold medal.
Unlock City Taxi (yellow)
Complete Mission A-2 hard with a gold metal.
Unlock City Taxi (red)
Complete Mission A-1 easy with a gold metal.
Unlock the armored van
Complete Mission B-10.
Unlock The A.U.V.
Complete Mission A-10.
Get Mini Bus
Complete Mission B-9 easy with a gold medal.
Unlock Tiger-SPL
Complete Mission A-9.
Steal a car
Complete Mission A-8 Bonus with a gold metal. Go to the cheats screen and turn on Carjacking chef and do any mission or do free roam mode (if you unlocked it) and press triangle to get of your car and find anothetr car to steal and press triangle to go inside another car.
On foot controls:
Triangle: get out of car (when stopped)/go in a car
Left Analog Stick: Move around