Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Mentioned: 7 Post(s)
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For an absurd version of what you are proposing, find the latest issue of Adventure Cycling's magazine. There is an article by a guy who built a 4-wheel, pedal powered COUCH. Yes, a couch, or more accurately, a Love Seat. It's a wonderful illustration of the saying "not everything that can be done, should be done."
BTW, there were pedal-powered commercial 4-wheel cars in the past. I remember seeing ads for them in Popular Science and Popular Mechanics years ago.
Also, I've seen pedal powered 4-wheel vehicles in two and four seater form as rentals in vacation areas. Most recently I was in Cape May and Ocean City, NJ and several places rented them. They weigh a ton and won't climb worth a damn but they are available. Maybe a Google search would turn up the maker(s).