[cmuguythrow]

My friend has a trackchair, which is basically a wheelchair with tank tracks. Slower than these bike-style chairs but very off-road capable. The coolest one I've seen is from Ziesel - their track-style chair can go 20MPH!

http://actiontrackchair.com/ https://www.ziesel-adventures.com/welcome/models

[mdorazio]

They are very cool, but the Ziesel starts at about $25,000... Not exactly comparable to this budget level machine.