dflye
S Sig Perf 414, VIN 814
Folowing the anallogy of previous installations
There is chance that one is installed here
https://maps.google.be/maps?q=39.143009,-76.845549&hl=en&num=1&t=h&gl=be&z=16
Not sure that the rest area on the northbound side would work well, as it doesn't have a way to make a loop through the parking area if you miss the Supercharger on initial drive through. The southbound rest area appears to have a semi-official road that connects the exit road to the entrance road, so that you can make multiple laps through without going against one-way traffic (or driving in reverse)