My husband and I had so much fun driving these around on the tennis court. (The smoother the surface, the faster these babies will go). That's right- even adults can ride on them! I believe they can hold up to 300 pounds.
When we first got these, we even let the kids drive them in the house on the hardwood floors. As long as we didn't get run over, it was hours of great entertainment for the kids! And then we'd play with them after the kids went to bed. :)