I think we need to see plug-in diesel hybrids. The torque characteristics of diesels are better suited to running as a generator than a petrol engine, and with advances in batteries and electric motors we could see hybrids where the diesel only charges the batteries, not drives the car. There also needs to be more hybrid versions of existing cars, not special (and fugly) hybrid models. But people are so vain and self-important these days that's not gonna happen.
Also, motorbikes.
Faster, faster, faster, until the thrill of speed overcomes the fear of death...
– Hunter Thompson