Ron,
http://en.wikipedia.org/wiki/Sidecar_World_Championship
I think the best way would be for you to come for a "ride in the 'chair" and then you can describe the difference between that and riding a tricycle...
http://en.wikipedia.org/wiki/Sidecar_World_Championship
I think the best way would be for you to come for a "ride in the 'chair" and then you can describe the difference between that and riding a tricycle...