I'm fairly certain Tesla will not put a self-imposed limit on the ramp up of production. They will ramp up production as fast as they reasonably can. In a perfect world, they would fill all the preorders on the first day of production. That's just not realistic. If they could do that, it would be amazing and they could make a lot of customers extremely happy. They will do what they can. I don't see how a tax credit for their customers would increase their ability to ramp up production faster.