FWIW & IMHO:
I totally agree with Phillyturbosix on this one. I realize that the turbo Buick world contains mostly good reputable people in it, with a few bad apples thrown in for good measure. But when it comes to buying something major as a vehicle, I would travel. One of the reasons for my decision is that I cannot afford to make a mistake on a car purchase. I am not in a position to say, "Oh, well, what the heck, I will eat the $2.5K or so for enclosed shipping from coast to coast, and I will probably eat several $K for making a bad decision, and I will regroup and go find another car. I would much rather fly, and if the deal turns bad, I will only be out flight time and money, I will have visited another place, saved myself money and embarassmnet, add another notch for a good decision to my belt, and I definitely will have enough money left to regroup for another purchase, and well, you get the idea.
Can you afford to make a bad decision in this situation? I could not afford to make that type of a bad decision finincially and I would not want to look at myself in the mirror the next morning either.
HTH