The Federal government, and state governments, and various EU governments have given tax credits to buyers of Tesla cars since almost the beginning of Tesla.

https://www.tesla.com/blog/what-you-need-know-about-federal-...

https://www.tesla.com/support/incentives

Tesla claims they pay up to 7500 for every Tesla (depending on the time bought), up to 30% + 400$ for every powerwall for example.