I did see that... I talked to Tim and I thought that they were using a 46" seat, but you are right... it's lower and more room. I just can't afford it. I think the whole set up is a good bit more than the typical cage & seat combo. It's cool though. GD.com has some pics on there of it in progress as well as some other unique stuff Tim did.

I went ahead and just got a PRP 42" bench ordered as it should work for my 3 kids when they are small. Then I'm sure either one of the girls will hang back in the camper or my Son will ride on his own. But for now it'll work. The 48" wouldn't fit from what I could tell.