Because bad ideas come in all danger levels, this is a video of professional freeride mountain biker Sam Pilgrim replacing his bike’s traditional wheels with giant circular saw blades to see how the bike rides. SPOILER: Surprisingly well. Granted, Sam is a professional cyclist and can probably handle a bike

This is a first person POV ride down the Jais Sledder desert mountain roller coaster in the United Arab Emirates. The video captures the full experience, including the single rider car’s 7-minute climb to the top, so I embedded the video to start at the actual downhill part at 7:10.