Gone are the days where the heat of the engine creeping through the bulkhead would leave you dripping with sweat; also gone are the days where you'd have to drop all the windows to get enough fresh air flowing through the cabin. In hotter, more humid climates the introduction of air conditioning came as even more of a godsend.

Drive a car through Florida, relying only on ambient air for cooling, and you'll soon be enjoying a swimming pool of your own creation. This is the story behind this gamechanging technology: