Red Rock is the 'conservation area' just west of Vegas. We go there to hike and walk around, but it also has a long bike route that is very well used.
A while back several companies started renting scooters so that tourists could get around town easier. Realizing that people often fell off of these two wheeled vehicles they then came up with three wheeled motorcycles which don't require a fancy drivers license to operate, and are fairly easy to use while still keeping the rider out in the sun. Somebody thought of putting a fiberglass body on these to make them seem more like small cars, the result is these vehicles, seen on the Red Rock loop
In response, here is E riding her bike around the living room. I don't ask, she was 5.
Don't know if the training wheels have come off yet.