Inventor Greg Fisher designed a two-person, pedal powered, four wheeler called the Quadracycle.

At first glance it looks like a glorified bicycle, but a video demo (available after the jump) of the Quadracycle shows it is capable of some modest off-roading.

Both driver and passenger have pedal systems which, in addition to a small electric motor, allow the Quadracycle to travel fairly quickly and over small rocks and other moderate obstacles. The Quadracycle seems like it would be a little tippy and prone to rollovers if you’re not watching what you’re doing, but the same can be said for some ATVs and UTVs we’ve seen.