Thin tires....think grass or dirt. Possibly wet sand. I like the concept. An electric assist motor would help. It also looks like it is a "folding" bike frame. The handle is just like those on marine versions of folding bikes for carrying on a boat. Hummmm! How about a water version? Pontoons instead of tires, mag instead of a surface coil. Okay, somebody run with this idea. Don't forget rod holders.