You can buy any car in America using the Tesla model. Just call them, tell them you'll pay asking price (just like Tesla requires) and tell them you want it delivered to your house with the paperwork. I have done this countless times, even for people negotiating a discount.

Also, you can generally call any dealership and ask to speak to the internet sales / fleet department.

They're usually (at least at Ford) compensated on volume-moved-above-minimum, not profit-per-vehicle.

They are definitely compensated via a gross profit commission split just like others at the dealership. They do have volume bonuses to make up for the fact that most of their deals will be low or no profit, but if you inquire on the internet about buying a rare model, it's not like they're going to discount it drastically and get a low commission... It's a rare model after all.

YMMV, but I got it directly from a roommate who worked in internet sales at a Ford dealership. Volume >> profit.

This might be why every single car I have ever bought has been from Craigslist (or a local equivalent), private-party, cash or cashier's check. Except for the one I bought from ebay which wasn't too different. But I've never had a new car.