If you have 1,000 pounds of cornstarch, some water, and a pretty big tub, you can mix up a batch of quicksand-like oobleck, and, if you’re careful, walk across it without sinking. But biking? That’s harder:

[youtube http://youtu.be/BleCJJAKkgw%5D

Just keep that in mind on your next bike trek through a marsh.