I'm surprised natural gas hasn't come into this discussion. Places that have a natural gas infrastructure already have a second "grid" to supply a lot of additional energy.

The challenge is for somebody to stop fooling around with gasoline/diesel/battery variants and design cars around NG, which need to accommodate a large tank to be practical. Emissions drop by 3/4 per mile, and cost per mile goes way down. Why we don't have this already is a mystery to me, but maybe this next price spike will wake people up.

My ideal world has a small NG co-gen unit beside my house, which supplies heat, hot water, and light to my dwelling; and supplies NG and/or electricity to my vehicle. Efficient, clean, and cost-effective.

My $0.02