The tax credit for Tesla vehicles is down to $1875 and will expire in a month. Meanwhile, many competitors will be coming on the market with a full $7500 tax credit, putting Tesla at a great disadvantage. I've long wondered why Tesla doesn't leverage their solar power equipment sales and the associated 30% tax credit to help vehicle sales. Tesla Powerwalls qualify for the 30% credit, and what is a Model S, X, or 3 but several Powerwalls disguised as transportation? If Tesla offered a relatively inexpensive inverter and gateway from the car to one's home electric system, wouldn't at least the battery portion of the car qualify for a 30% credit?
Advantages for the buyer include home power backup, cheaper electricity from solar power, solar charging of the car, and a potential $14k tax credit. Advantages for Tesla include greater solar sales, profit on the inverter/gateway, and, of course, more vehicle sales and a competitive advantage. There are arguable "gotchas" with respect to this suggestion, but I don't think they come even close to negating the benefits. For more details on this idea, please see http://PriUPS.com/RIKLblog/nov19/191128-tesla-tax-troubles.htm
I'm really curious as to why Tesla hasn't offered this long ago.