I can't believe not a single one of you guys mentioned that you have to also turn the wheels to make sure the front rolls to curb if on an incline, put out the cone at the front and rear of any corner facing into a lane, and if you don't chock all 4 wheels front and rear of the tire then you're just asking for trouble when the parking pawl fails, the parking brake fails, the tires lose traction with the ground, and if you're not going to do the bare minimum then you shouldn't drive because that's just irresponsible.