I call it Putt-Putt most of the time.
It's part of the Kleenex / Xerox / Band-Aid / Rollerblade syndrome of relating to a general product by the name of one of the products.
"Pardon me sir, I just cut my finger, do you have any sterile, adhesive bandages?"
Most people, at least teenagers, do not even know Putt-Putt is a company (at least in Cleveland).