Companies often sell a motorcycle and pretend it's got the safety of a car.

If you call them on it, they'll say something like "Don't worry, we put a seatbelt on it."

Putting a seatbelt on a motorcycle doesn't make it any safer.

It's a category error!

A car envelopes you and protects you, so keeping you strapped in it can be safe.

With a motorcycle you're fundamentally exposed.

That is not some superficial difference between a motorcycle and a car, it is fundamental.