Yey, a human powered off-road 4×4! Can it go over big rocks though?
The Trail Cart: A permanent four-wheel drive “bike” for the true off-road masochist. Looking at the size of those tires, and the fact that you are powering all four of them with your legs, we’d suspect that this thing would takes thighs the size of hams to even start it moving. But a poke around the website shows the Trail Cart being ridden by some not-too beefy Germans (the Cart is made in Germany), and even one kid.