What are those three wheeled motorized scooter things called?

Question

I mean in America and yes they are motorized. Sometimes you find them in malls because some mall security guards ride them around.

Answer 1

Are you wanting to purchase some?  I can get you a deal on some lightly used models.  What did you say the name of that mall was...?

Answer 2

Pip knows y'know. Some of the elderly drivers of those things are lethal. they make cyclists look like paragons of virtue

Answer 3

They are just know as a motorized scooter. My mom has one and that is how I know.

Answer 4

Trikes....