Google just signed to rent 110,000 GPUs from SpaceX for $920 million a month. The man collecting that check announced he's living in a trailer in Memphis. The world's richest man could run this from a yacht. He chose a parking lot next to gas turbines. And the trailer is why the site moves the way it does. One of the Memphis buildings came with 8 megawatts of grid power against a 340 megawatt load. Instead of waiting years for the utility, Elon parked dozens of rented gas turbines in the…