I have a problem getting in most cars nowadays. My head hits the roof as I get in. Put a helmet on and I won't be able to get in or sit in the front seat of the car. I think the mfg of cars ought to try to get into there cars, then maybe they would raise the roof.
I used to ride a motorcycle, and I wore a helmet. I felt safer with it on. I know here in CT they had a pappy's run annually, and when they tried to legislate a helmet law. They came out in force against it.
What they should legislate is roll bars in boats. So if they roll, they will roll back to right side up!