9am Porsche dealership, point at whatever the most expensive one in the showroom and say "I want it and I want it right now, how much? Ill bring it back for its first service tomorrow but I want to drive it out right now" drive it straight to the Audi dealership and repeat at the BMW dealership, if I have enough money and time left, head to the Honda dealership and grab a Type R.
The following day, drive the cars back to the dealership, say "I know I'm going to take a loss but I've changed my mind. Can you buy the car back?"
Probably wind up with about $700,000 and I'm not taking back the Type R.