Seat belts are important, especially for the passenger, who doesn't have a steering wheel to hang on to. One unexpected emergency move and they are thrown from the cart, accident or not. What would be a good idea would be to design a roll bar in the frame enclosure. You would remain in the cart, but not get crushed by it.
There are plenty of carts out there that exceed the 20mph limit. I get passed by them all the time. Haven't seen the cops out with their radar guns in a long time. If they needed to raise some money, all they need to do is spend a few days in The Villages. At $250 a pop, they could make a killing.
