So I've been talked out of using the Sit n Stroll on my upcoming trip (and now am trying to sell it! ) and have decided to take my current car seat. Next dilema to solve: how to get the seat through the airport. I see people rave about the travelling toddler and the gogo kidz. The gogo kidz really appeals to me but is kinda costly. Maybe I'm being stupid but is there any reason I can't replicate this contraption by strapping my car seat to a small luggage dolly/cart??? I figure that all I need is a cart (the one I've seen holds 150lbs and is like $12 and a luggage strap. I'd run the strap behind the seat and around the luggage dolley and tighten. Any reason why this wouldn't work? Or should I just get the travelling toddler strap? Thanks.