BART spends $1.10 in electricity per 15-mile passenger ride. A Tesla Model Y costs $0.76 for the same distance. Carry 5 people instead of sitting solo and it obliterates BART on pure efficiency. The quoted tweet adds context: BART uses about 1/700th of California's electricity and spends $65M yearly on power (roughly 6% of operating budget). So it's not draining the grid. But the efficiency math is stark. This isn't a case for nuking public transit. It's a data point showing how badly transit design fails when ridership density drops. BART works great at scale. Solo car trips will always beat empty trains. The real failure: not enough people on the train to begin with.