I had a few people tell me billy goat introduced a self propelled 13 or 15 hp(cant remember) this season. i dont see it anywhere on their website, nor have i heard of anybody buying one yet. can anybody add some truth to this myth? we have one of the older i think 13 hp billy goats at work and the things a monster, but a pain to push around. i hear the new one has a transmission just like on a walkbehind. who has pics of this beast?