He apparently did a cardboard canoe, too. BTW, this is not regular appliance box cardboard he's using, but it is most definitely cardboard. I think the only issue that would need a solution would be the braking surfaces.
'91 Toyota Pickup
'09 Kawasaki KLR650
'12 Gunnar Rockhound 29
"To live is to suffer, to survive is to find some meaning in the suffering." -- Friedrich Nietzsche