[ARMAN]

Driving all 20 or 30 cars is rediqulos few thousand km on each.

I'd do it this way - building a showroom with garage for service with all needed equipment, buy 20 cars put them on sale and in a meanwhile take one after another to drive(cause all of them are yours anyway) than you return them back to showroom and the ones wich you fall in love you keep or sell and than buy one in better condition ummmm.... what a dream