It's funny you mention that and work at a car dealer. On my last car buying experience I intentionally screwed with the guy mentally. I arranged the deal through email and only spoke on the phone with him a couple days before picking up the car. Further, I paid cash (as far as he knows). Then, on the day I picked it up (and met the dealer for the first time) I wore the most faded pair of jeans I could find and a wrinkled shirt. I looked like a slob.

So, I walk in looking like a bum (a 21 year old long-haired bum mind you) and give the guy a bank check for a $40,000 car. Oddly, I didn't get the reaction I desired. The guy was totally professional and treated me with great respect even before I gave him the money. He must have thought with a name like Riccardelli I must be a mafia guy and he better not insult me.