Fire extinguishers - do you carry one?

I use motorways in my Tf on a daily basis, and have had a couple of occasions in my time driving, when a fire extinguisher (could) have proved beneficial.

If you do, where do you keep it, the boot, the cabin? Presumably the under the bonnet would be a bit silly due to the amount of time to get it out in an emergency.

from the last news http://forums.mg-rover.org/showthread.php?t=729817&goto=newpost

via IFTTT