Thanks for all the responses... all good advice. I am definitely not a complainer, but I have had my service center within 5 miles of my house for as long as I can remember. In my mind this has stuck out as an issue while researching Tesla, although it doesn't seem to be widely discussed on the forums, etc.
With all that said... after spending the past few days reading up on-line, I did convince my wife to drive down to the DC-area today so we could take one for a test drive. We decided to go to Tysons Corner location, so we could combine it with a visit to Air & Space. This added another 20+miles beyond Rockville, and I have definitely decided the distance is not a deal breaker. It will certainly change the way I will need to schedule service, as I won't be able to drop it off on the way into work like I can with my Audi... it will require planning a day, but fortunately there is lots to do in the Rockville and Tysons Corner areas.
Although I have wrapped my head around driving in for the service, I still wish they had an option where I could pay $100 or so for someone to come and pick it up. (For that matter, I suppose I could pay a college-age neighbor's kid to drive it down and back for $100 if I can't arrange the trip myself.)
On a different topic... after spending the afternoon driving and learning about all the details of the Tesla Model S, I am convinced this is the next car for me. Now it is just a matter of figuring out what features I want and the timing. Unfortunately, my wife loved it too, and suggested that we should trade in her car and get the Model S for her to drive day-to-day, with me getting to use it on the weekends as the "family" car. I think we need to keep one gas-guzzling SUV for now, so the biggest hurdle on making the purchase may be negotiating the time-share agreement with my wife!