I used one while golfing a year or so ago. They actually work pretty well. Good thing you have rode one before, because it was tough to get used to but once you do, you do play rather quickly. The ones I used were equipped with GPS so they were actually really nice.
You will have to let us know what you think. I enjoyed the experience, I know they can't be used for everyone but I wouldn't mind seeing more golf courses migrate towards this sort of transportation.