Gerrit Polder from the Netherlands has put detailed photos of the assembling of his
Alleweder in the web:
http://www.qsl.net/pa3bya/alleweder/allewed1.html
Lohmeyer Leichtfahrzeuge offers an Alleweder with an additional electrical drive:
http://www.leichtfahrzeuge.de
Lorenz Steinbock has found a good compromise between weather protection and sufficient air conditioning. His Alleweder has a cover which is open at the sides.
http://www.3-rad.de
The International Human Powered Vehicle Association is the worldwide organization for human powered vehicles, boats and aircrafts:
http://www.ihpva.org/