I think the confusion is with the "temp tag" issue.

All you have to do is get temp tags from NY and put them on the car. You're not registering the car in MA so their 'temp tag' law has no bearing.

I would suggest that you call NY DMV on Monday and tell them what you're trying to do. Don't bother with MA, they and California are the most ass-backwards over governed ridiculous law states in the US.

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