50MPG cars account for a small fraction of vehicles. The article ends with “heavy SUV” purchases as a major issue. The economics favor EVs as $2.30 per 100 miles is much cheaper then $16 per 100 miles for average MPG. Concerning wind solar and grid batteries, that is already cost effective and stable in many locations and the trend is lower cost. But ok not everywhere just now. What about converting 25% of vehicles to EV. That is a certain economic win with known material supplies. Remember when oil was thought to run out by year 2000. More was discovered. Likely that will be the same for EV. The article does not account for engineering innovation and industry development. Sure, it could hit a wall in terms of supply but that is decades off. I say convert as many cars to EV, reduce oil demand so gas becomes cheaper, electric demand will grow electric supply so by economy of scale electric rates fall. Let to markets of supply and demand sort out the steady state market share.