The clock is ticking on tax credits for electric vehicles—and that’s pushing a lot of people who were debating whether or not to get one off of the fence.

Sales are surging at dealerships for EVs, and likely will remain high for the next month and a half. That’s because on September 30, the $7,500 tax credit for new EV purchases (and $4,000 for a used one) will disappear, a move that will add challenges to an industry that already has plenty.

Wait times for a new Tesla are currently hovering between four and six weeks, but over the weekend, the Tesla site was reportedly showing waits of four to six months. (It’s unclear if that was a mistake or glitch on Tesla’s part. Tesla did not reply to Fast Company‘s request for comment on the matter.)

Ford and General Motors, which also make EVs,

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