Even if it goes over, it doesn't phase out on the 200,001th car sold. the sales quarter marks the end of the $7500 IIRC.Here‘s a scenario to put your mind at ease regarding if the 200k vehicle sales cap could issue could even come into play:
All the data that I read indicates that Nissan was somewhere around 15,000 shy of hitting the 200k ceiling for total Leaf sales when the new legislation took effect mid August. Since the Leaf now qualifies under the new tax credit guidelines, (built in the USA) all Leaf sales August 17 forward will no longer count against Nissans old cap. That said, most data also suggests that Nissan closed the Ariya reservation process down in the USA just shy of 10,000 reservations. So it would be impossible for current Ariya USA reservation holders that have signed agreements with Nissan prior to 8/16/22 to ever exceed the old cap guideline rule.