Tires that don't need air is an amazing idea.  How many times have you had a flat tire on your car, bike, scooter, wheelbarrow, literally on any tire?  That can soon be fixed with an airless tire.  I put in a few videos with them being put to use.  One is for a truck and the other on a military Humvee.  These tires are truly amazing and they are actually pretty sweet looking!