Bruce Weiner Microcar Museum has been one of my favorite sites. I remember many of the cars pictured there from my teen years. This is a fantastic collection. It is now going to be auctioned off. There is an online auction catalog. It is a bit slow to load so have patience.
I mention it here because of a few of the entries. There are several Mochet velomobiles and a 1953 Velo-Velocar.
Note the mid-drive. BB same height as the seat. Compact LWB. Tailbox for speed. Good design never changes.
Attendees only pay $80.00 per couple and you get a printed catalog. See you there.