Not really sure what kind of bikes this would be useful on. The most basic form of shock absorption is the tyre, and you can run with higher volume tyres and lo

Not really sure what kind of bikes this would be useful on. The most basic form of shock absorption is the tyre, and you can run with higher volume tyres and lower pressure to make it more comfortable. Of course on the road this will slow you down so people don't tend to do it. For the kind of urban obstructions in the video you could ride perfectly well (and with more fun) on a fully rigid frame (like a BMX). For more serious mountain style riding you need rims that will not be deformed by rocks etc and just keep rolling over obstructions.