It also mentions power as one of the main costs. He probably did about 30 mins of DD. The power will nearly all come from solar panels that the customers will be paying for. Refer to Elon Musk's recent 1 billion dollar investment in rooftop solar in Mexico for DD purposes,
But yeah, if he was referring to the entire cost maybe. The cost will come incrementally and Jan has done this before. Also Alejandro our project manager,