Whenever you get into a car, prior to moving off, you must carry out your cockpit drill.  This involves checking your handbrake is on, gearstick is in neutral, all doors are shut correctly, adjusting your seat, seatbelt, steering wheel height, and finally your mirrors.

This is to ensure that you are comfortable, can reach all the controls with ease and have good all round vision.

Remember:  If you FAIL TO PREPARE, then you should PREPARE TO FAIL.