NEXT-GEN CHEVY VOLT could use diesel or rotary power. Much as I love my RX-8, diesel seems more sensible. But maybe I’m wrong.

UPDATE: Engineering Prof Chris Kobus writes: “Glenn – you’re absolutely correct. Diesel technology is inherently more efficient. If all spark-ignition engines were replaced with diesel, we’d reduce our dependence on foreign oil by almost 50%. As good as hybrids are in terms of fuel economy, hybrid diesels would blow them all away. Locomotives have been hybrid diesels for some time now.”