Carry on after a puncture - Goodyear advert

I don't know what these do (or don't do) but I was just wondering why Goodyear would go for those rather than those "tyreless tyres" that were developed about 9(?) months ago (by a competitor no doubt)?

Is it just cos the other sort are patented and Goodyear have to try for the next best thing? I guess they'll be better than tyres which don't "run on" though.

Just wondering about comparative properties and whether it's a tyre thing or a commercial restriction thing.

Mo