You mean handicapped people, at whom many of those products are implicitly aimed?
https://www.bustle.com/p/as-seen-on-tv-products-arent-for-la...
Yeah, it's funny laughing at the idiot who knocks over a whole bowl of popcorn. It's not so funny when it's your grandfather with Parkinsons, who has serious mobility issues and would very much like something to help him keep his popcorn in one place.
And yeah, sure, people in this thread can suggest taking the trash with them every time they leave the car - except actually getting into and out of the car can be a non-trivial ordeal, sometimes involving assistive devices.
So maybe everyone in this thread can try to look beyond their mid-20s, childless, able-bodied lives involving short drives that involve transporting nothing more onerous than a shoulderbag with a Macbook in it and maybe a latte.
I'm also pretty sure that a trash can for the car isn't going to make that much difference for folks with mobility problems - there are too many other options already out there for trash collection/disposal including small boxes (e.g. a square or cube shipping box with $0.25 of hook side adhesive backed velcro stuck to the bottom).
The product has value, and solves the problem at hand in a unique way.
Being in the car for a few hours with an exposed banana peel isn't the greatest, regardless of what happens to it at the destination.
I mean, yeesh, people have their reasons for having a trash can in the car. I'm a take-your-shit-with-you kind of guy myself, but I don't have kids and I don't eat in the car. Sure, that makes me a superior human being, but I don't rub it in people's faces.