Unfortunately, no, not really. I hear Lime Rock does winter AXs sometimes, but I don't think there's any scheduled. The issue with anything planned is that, well, you can't plan weather.
As for worrying about tickets- I wouldn't. As long as you find a open, clear lot, preferably with no business attached (or not open), you're not likely to get trouble. I spent about 5 hours in CP last winter, much of it in the Target lot (since that's twice as big as the building). Never had an issue. Schools are another good place at night/weekends. Also, the K-Mart lot is usually pretty empty on the far side. (Lowes sent somebody out to ask us to leave though.

) Basically, be smart about where you choose to experiment.
And yes, I saw many a

, and they must have seen me.