You might consider a mobility scooter. I was doing some research for something to run around the campground and run errands. I found used mobility scooters on ebay and Craigslist that were still in good shape and in the 300 to 600 dollar range. Most of them easily come apart (no tools needed) in 5 to 6 pieces so they will fit in the trunk of a car. So they are perfect for an RV. The one for my wife was $600 and it had only been used once; somebody's mother didn't like it. The one I use was $300, it had been well kept but was 5 years old. They both are still working for us after 7 years. It takes about 15 minutes to take them apart or put them back together. They are a lot safer than two wheel scooters.
Plus you can use them in stores, at sporting events and other venues, flea markets, fairs...etc. They have a range of about 6 miles and will work in gravel or hard pack dirt. We added canopies on ours so they look like miniature golf carts.