We saw this child seat/bike system the other day and were very intrigued. While our kids are both seasoned two-wheelers by now, we were pretty jealous when we saw this. Yepp is a Dutch company (natch) that makes the mini kid bike seat (starts at $139) that sits in front as well, which is genius, especially when they are little. We wondered if anyone had ever tried this whole extendo bike system pictured here? It looks really cool, but wondered if anyone with little kids had seen the benefits of a longer bike when toting kids.