Shucks, someone over here is selling an antique riskshaw bike they found in a bunch of hibiscus bushes. The passenger seat is over the 2 FRONT wheels. Told the wife now how the heck is one supposed to steer with all that weight up front. Needs LOTS of work, but they're asking around $500 for it. I say not.
Another fellow is making and renting his own pedicab trailers. Wife likes them, but I think he's asking almost $1000 ea. That would be a sweet rig with a 1000 watter or larger and lots of batteries.