If you have long hair, don't wear it loose while driving. If you do, don't sneeze. Sneezing will make you lean forward, and then when you lean back again your hair will get yanked into the seatbelt holder and get stuck there. And then you'll be stuck in stop-and-go traffic with your head locked against the back of your seat by a section of your scalp and you won't be able to get the seatbelt to disengage until traffic starts moving again and you can take your foot off the brake.
Also, it hurts.
And if you do frequently wear your long hair loose while driving, just agree with and lie to the guy when you take your car in to be cleaned when he looks in the back of your car and says "I guess you have one of those dogs with long hair."