You certainly can do an electronic transfer if the dealer is set up for that. Most won't accept debit or credit cards because of the fees, or will only take them up to a few thousand dollars. I get that, on a $30,000 car, the fees at 3% would be $900, and that either comes out of their profit, or they jack up the price to you. No thanks. I'll write a check and save the money.
How do you handle private party car sales? My last car purchase was private party 2 years ago. I wrote a personal check, met the seller at my bank, which he did not have an account with. He cashed it at my bank with me there, got the cash, signed over title on the spot.