Really old news. The thing with them that makes them nice is if you are being chased by the local sherif or other coffee sipping donut munching crime syncdicate types, they wont be able to take out your tires with spike strips (not that any of you would run, but you know) so now you'll look at your tirres less because they wont need air. Problems I have heard about them ranged from the fact that they flat spot if they sit for any length of time (and I mean really flat spot) and it takes 10 minutes or so to get them round again by driving on them. As far as how they look, to make them more appeallling to the average joe they could make them look more like tires by just adding a sidewalll to give the tire some body, not for strength.