Size wise they are great.. My parents had one, and I used to put my 2 next to each other and fold up one of the seats beside the door for easy access to the back seat for my nieces and nephew.

Reliability wise, it was great in the beginning, but they started having problems when it was nearing end of warranty period.. May have been a co-incedence, but it may have just been the lifespan before things start going wrong..