Just curious, is it the size of the car that has become a problem? I know those "L"s are big and not exactly a commuter car. Like my car, yours is probably better suited for the highway. How long have you been going into Boston with this car? I can imagine the "Big dig", isn't helping traffic matters right now. I would try to sell it. Granted most cars are worth more in pieces than whole, but like Sixto said, what do you do with the carcass after you have parted it out? My neighbor is looking to buy a MB diesel, but unfortunately he is looking for a W124 diesel. To him, my car is too big for his needs. So your car would definetly be too big.

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member