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I stood in line on the first day, and I observed a very large amount of people reserved TWO cars, believing they would or could sell off one of their reservations. I bet many of these cancellations were not wanting the 2nd car, because they could not sell their reservations for a profit, or...
I'm hoping they corrected the MAPS weirdness. Mine has been slow-clunky, and weird zooming in and out (even when not using NAV) in the non-satellite mode.