I bought me a Cushman

How fast do these things go?

Here's an interesting one...and reasonably priced-

http://tampa.craigslist.org/pnl/cto/4667088196.html

it depends on the rear end ratio. Most with the skinny tires were high ration for the street and most with fat tires low ratio rear for the turf and also had a 2 speed granny box between the rear and tranny (golf courses and parks). I used to have 5 or 6 at one time (rented them out for Seafair and other festivals etc.) Some of those were meter maid vehicles and had a 60 mph speedo. I had one about that vintage... I think it would go 35-40... I was too afraid to push it past that if memory serves correctly.