I have been riding trikes for quite a spell now, and you are correct on some points. When I go out to ride fast, I take my two wheeler, and ride. When I want to have fun, and relax, I ride my trike. Now, a word about the windcheetah....I was at a fun ride in Punta Gorda a couple years ago on my Bacchetta Strada, which was pretty quick, and came up on a fellow riding a windcheetah trike. He was cruising along at about 17mph, with no sweat. It took me a long time to catch him, but it was flat there, and I had leg enough. That is a very fast trike. Catrike's 700, with the right rider onboard is a very fast trike. But for me, average cruising speed on the trike is 14-15mph, compared to the 17.5-18.5 that I cruise on my two wheeler.
Your miles my vary,
Tractor Tom in Okeechobee, FL