Just because it's common for people to get in and go with unfamiliar cars doesn't make it any less negligent. If you don't know how to e.g. turn on the hazard

Just because it's common for people to get in and go with unfamiliar cars doesn't make it any less negligent. If you don't know how to e.g. turn on the hazard lights in the vehicle you're driving without searching extensively or digging out the user's manual, you've failed to be a responsible driver. If I got in a loaner car with semi-autonomous features there's no way I'd drive away without first paging through a user's manual or online guide understanding those features first. especially given how many crashes have occurred due to apparent misuse of these vehicles.