For a Toyota dealer Miller Toyota in Manassas has been my choice. For sales Sam Lee, a Gen 1 Prius owner is fantastic.
I drove 150 miles to buy my Gen 4 from Sam. My oldest son bought his 2 Prii from him and my younger one bought his Corolla from Sam. The price is less than local and the service superb! He also can deal a lot remotely if needed.
150 miles is a long way to go for a car. We're lucky in southern California we have dealers 10 miles apart or less. Most will compete for your business so you really don't have to drive too far to get a New car. Although I'm having a hell of time finding a dealer to discount the new RAV4 hybrid......
I actually looked at my local dealer first. It was during a stop-sell so I could not drive one. The salesman insisted Trim Two all had black interior. He would no t budge on his price even though I told him I was shopping for the best deal. He wanted me to tell HIM the price I would be happy with. I saved over $2K by driving 150 miles. After the local dealer messed up the first inspection, I drove the 150 miles for the wiring harness recall. If I cannot trust the local dealer to rotate tires & record what pressure they set, I was not going to trust them to perform a safety inspection of the wiring harness. By sons had already had good experience dealing with Sam by that time. We dealt a lot by email. I drove to see the car & buy if reasonable. Before we test drove, Sam spent over 30 minutes in the car demonstrating its features. We drove it, waited on PDI, & drove it home.