Have you beat Izzy, my car that has a spare is a Mazda Miata. Little car, itty bitty spare. It doesn't have the smallest trunk that i have ever seen but it ranks right up there. The hardship of driving cool cars is very little trunk space.

http://www.safetyseal.com/store/offroad.htm

These are really nice. A friend of mine has this set. This is the offroad kit, they also make a car/light truck kit. Mine is the Walmart el cheapo, but I've gotten pretty good with it.

I've plugged a tire in less than ten minutes, counting airing it back up, without removing the tire or even jacking it up. (I only run the tires at 10 PSI when I'm in the woods).