Last bike swapmeet I went to had no less than 4 Salsbury scooters in assorted conditions for sale. Those were about equal to the Cushman but, some people thought they looked better. Here's something you might want to take a look at, http://www.mmcoa.org/ Not quite a motorcycle, but they don't handle nearly as badly as a scooter.
Years ago, there was a race across the desert and up the side of a mountain in So. CA. One year, it was won by a Mustang, largely because the rider picked it up and ran with it in the desert leg and olaces where the mountain leg ran through muddy areas.

Let's hope there's intelligent life somewhere in space 'cause it's buggar all down here. -- Monte Python