I'm not taking credit for this because others have posted the methods....
But, if you create a new Google sheet and drop the following formula in the top left corner, you can easily see the VINs of matching cars being assigned. Since they paint and fit wheels in batches it's a pretty good leading indicator!
Code:
=query(ImportRange("1egcRTNt_qWpLTeyJASgQ3WoLqTZUXnGQ2QgBUIh7BZY","All Entries!A3:AG3500"), "SELECT * WHERE Col11 >= date '2018-02-22' AND Col4='CA' AND Col15='Midnight Silver Metallic' AND Col16='18 inch Aero' Order By Col11 ASC, Col13 DESC", 3)
I picked the invite batch right before me (and in my color and wheel combination) only in California to observe the VINS getting assigned. It's not foolproof, but it's quite interesting!