Hey, Bugsy -
Somerville on Main Street is the place to be on Fridays. 200 or more cars, so you have to get there before 5:00 for any hope of a spot.
Tuesdays in Bridgewater is the Fudruckers parking lot on Rt 22.
Bear Mountain in New York might be closer for you. Saturdays, I think for that one. I have never been to that one.
Hope to see you out there......