Own an independent automotive storage company separate from any other business activities you may have:
*Race Car Mechanics - Porsche, Maserati, Ferrari, Lamborghini, Aston Martin desperately required*
An interest in motor cars is advantageous as customers often want to talk about cars when they register, visit and drop off. But this is not a requirement as you may already have a warmly "chatty" personality able to talk happily about anything, not just about cars.