well i have bought one but not used it yet LOL - but will still give one bit of advice.

i chose mine based on lots of the issues raised here, looking at it thought it would easily fit into my boot (mazda 323, average sized sedan), and while it does fit in the boot, it takes up HEAPS more room than i expected it to. so i would try it in the car too, just to be sure it suits.

good luck - its not an easy purchase to make!!

Linda