Not too far from 95/90 intersection, if possible.

I am just looking for any place where I could practice a bit, say, test car after getting some mods done, check new alignment, etc.
Seems like there are no more empty parking lots where one could go crazy, there are no empty places left at all.

It used to be plenty of empty place near Kohls at Natick mall area but not anymore - I drove there and could not find empty spot, plus people were walking there constantly.

As I understand - Devens track is closed through entire week and gate opens only at events, right?

 

Devens is closed to the public during the week and often used for training the State Police. That is one reason why there are so many cruisers there. Check out the "special" cruisers parked near the tower. Cars with outriggers, cars with heavy spring steel bumpers, etc.