I, too, bought a tadpole trike (ICE Sprint) this fall. I was laid up with a fractured wrist and apparently spent too much time browsing about cycling stuff on the internet. Anyhow, I discovered these things and became enraptured to the point that when I saw one on the local CL, I snapped it up. I still do most of my riding on 2 wheels, but the trike is a real wonder. I've put about 400 miles on it so far and am still figuring things out.

Also, it's one of the few things I have found that allow old guys to impress kids.