Here's a link to my (outdated) North American Transect page.
For more information about what a velomobile is:
Velomobile USA is making Alleweder velomobiles in Texas!
The Human Power Institute [velomobile] mailing list.
Ethan Davis has created The North American Velomobilist Website.
In Canada, velomobiles.ca offers "Environmentally Friendly, Cost Effective, Sustainable Transportation for a Healthy Lifestyle" (and kayaks too!)
Organic Transit in Durham, NC has some interesting options, as you can see on TechCrunch and listen to on The State of Things.
And one last, important link:
How to NOT get hit by cars. Everyone who cycles in traffic should read this, for sure.