I hope this isn't a sensitive topic.
About 30 years ago, I read about the Windcheetah. I'd never seen such a cool, fast looking machine. I decided they must be very fast. But I've never seen one in the flesh.
In the intervening years I have seen other trikes, while on group rides. The things that strikes me is that I have never seen a trike moving fast. On group rides, the trikes are always being ridden rather slowly, like 15 mph on flat road. Other types of recumbents I've seen ridden fast and ridden slow, but the trikes have all been slow.
I have test ridden a trike, briefly. I don't recall if it was fast. Being to low to the ground, it felt sort of fast, but I couldn't really tell.
What gives? Have I simply happened to miss all the rides with fast trikers? Are all the fast trikers so far in front that I never see them? Are trikes inherently slow? Do trike riders tend toward the relaxed side? Did all the fast trikers switch to velomobiles?
My initial awe at the Windcheetah left me thinking the trikes I see should be hustling along a lot faster than they are.