Some of he car agencies have cars seats. However if you are looking to purchase one anyway, I recommend the sit and stroll. I love mine. It's not small. It's a bout the same size as a regular car seat, but it is also a stroller. The wheels fold into the bottom of the seat and it becomes a car seat. Did I say I love mine!!! I don't have to take a stroller with me, ans can use it as soon as I come off the airplane. Because it's more like a car seat on wheels, the seat is a lot more comfortable than a stroller, and even has a little travel pillow attached to the seat.