Im in So Cal, but went thru the same issue with my car. I live in a high-rise condo and dont have a do-it-yourself location in our complex to wash my car. I found that none of the suitable brushless carwashes around me wanted to do the car, always recommending the hand wash option for about $60, a little bit more than I care to spend for a weekly chore. I also recognized some issue with the car not being able to go thru a wash without someone at the wheel. Dont know about MS, but once you put the X in neutral and exit the car it automatically sets the parking brake and goes into park. I also had some concerns about some car wash attendant sitting behind the wheel and driving (at a reasonable speed) thru the wash. Just too many various issues to consider.
I ended up locating a coin op wash-it-yourself place near by and that has proven my best option. I did have to buy a bundle of those special lint free towels (found a 24 pack at Costco for a good price). Im able to vacuum the car, pull into the wash bay for washing and rinsing, and then into the lot for the wipe down and detailing. Definitely brings me back to my high school days where I spent my weekends detailing my car!