It is not my build, the bike belongs to Ruud. I just pasted the link in Google translate. Over here in the Netherlands Vredestein is a common brand. I can only Google for a dealer in the US.
Ruud has proven this concept by tossing the bike over on a trip to Nordkapp, only with some damage to the plastic parts.
We have peeked underneath Ruud's bike to view the subframe construction we made as shown above.