I rode a Tour Easy before my knees finally gave out. But that Vetter thing looks downright dangerous. It would be awkward and clumsy around town, and who knows what kind of effect wind gusts or a passing 18 wheeler would have on it out on the road. Looks very top heavy and unstable.
I won't spend more on a bike than I think it's worth, but if it's a good deal, I don't seem to have a problem buying bikes I don't need.
2002 Vulcan 750, 2013 Royal Enfield B5
2001 XT225, 2009 Genuine Stella
1980 Puch moped