Rick, you mean the Maxi Cosi car seat, yes? They're not sold in the US (though I understand there are some shops in the Nederlanden that are willing to ship them here (for an appropriate fee, of course). If we have to move her that far, we'll rely on the Bugaboo...or the car. We also have some nice slings to carry her (which of course means that I get to carry most of the gear!).

But I agree, carrying a baby in a car seat is a pain for more than a minute or two. It throws you well off balance.