An anonymous reader writes with this excerpt from Low-Tech Magazine: "Both the velomobile and the electric bicycle increase the limited range of the cyclist — the former optimises aerodynamics and ergonomics, while the latter assists muscle power with an electric motor fuelled by a battery. The electric velomobile combines both approaches, and so maximises the range of the cyclist — so much so that it is able to replace most, if not all, automobile trips. A quarter of the existent wind turbines in the U.S. would suffice to power as many electric velomobiles as there are Americans."
One thing I wish was included in the article — worth reading for the photos alone! — is a chart with prices and worldwide availability for more of the vehicles mentioned. They do mention, though, that the eWAW ("the Ferrari of the velomobiles") costs 7790 Euro.