True I forget about that at times. I've purchased all of my vehicles over the last 6 years from cars.com. Picking exactly what options and colors I want. I've had a few purchased from out of state and trucked in to my home. Shipping is about $1 a mile also.
Another thing to do is when you do find the vehicle you want on cars.com, go to the dealers website where you found the vehicle and enquirer about it. Most have a lowest internet price for the vehicle just fill out your name and email and they will send you their lowest price. I just did this with my father in laws new Corolla and saved him an extra $1200 over the Costco price and got him into a Corolla S rather the the LE premium he was going to buy. So that's like a $2200 savings over what the dealer and he had dealing. $1000 more car for the S and $1200 more savings with Internet price. I just found and bought a new Avalon Touring a week ago like this too and saved $5500 with Internet pricing as well. Better then my Costco price.
If you do buy out of state it's really easy. You give them a deposit like on a credit card after you've been pre qualified.. They call you back after that and discuss the real numbers, then you agree and work out pick up or delivery.. They should one day you over all the documents and you read over and sign and one day them back. Once they receive the papers back you work out shipping or pickup.
You'll have to smog a out of state vehicle once it gets to California for registration. Make sure they fill out your city's tax rate and title and licenses correctly too.
Love cars.com. It's literally like ordering a pizza.