As a passenger in the car, whats the things a driver does that pisses you off, makes you uncomfortable, or terrifies you?
Personally, I find it endlessly frustrating and even terrifying to be in the passenger seat with a driver who jumps in the car and immediately goes.. Then worries about Seatbelts/Radio/AC/Mirrors/Plugging in Phone/etc etc while driving.
In movies sometimes they do it for freakishly long, obviously because the car isn't actually driving or because it's sitting on a trailer. It's become a trope, some films parody it.