Yea, I was just thinking for $268 he drove 2600+ miles. I'd be lucky to get 600 miles on $268 (CA gas rates).I'll add the miles traveled from the Twitter link. I thought it was already posted in this thread.
"Total miles driven 2,635."
2635 mi/1154 kWh = 2.28 mi/kWh, which doesn't address charging losses and trip beginning and ending state of charge. He adds that he found 68 mph to be the sweet spot for efficiency and speed.