https://www.cnet.com/roadshow/news/tesla-orders-eligible-for-full-tax-credit-until-oct-15/

The tax credit is available for the first 200,000 electric vehicles sold by an automaker as a cost reduction measure set up by a tax overhaul passed by the Republican Congress in 2017, Reuters noted. It'll then be reduced by 50 percent every six months until it phases out.

Tesla's site alerts visitors to the deadline.