I had no idea they were still so uncommon in the UK as to be interesting! We have all kinds of stretch SUVs over here, especially stretch Hummers, but other car makers seem to make stretch versions too. I think, as you suggested, the logic is that in a taller car it's easier to move around and thus make good use of the extra space the 'stretch' affords you. Of course, it could just be because for some reason people think they look cool...

I saw a double stretch limo in Vegas - it was about as long as a really long lorry, and only about 6 feet tall (or whatever a normal car height is). Very weird looking.

Hummers are considered SUVs now? Eek!

What next, the Scania R620 compact sedan?

Well, only because they'd have trouble with drivers' licences if they classified them as tanks.

What would a Hummer be considerd in the UK if not an SUV? (NB the Subaru Outback is considered a small car here).