I think a "plan" that everyone gets a chance to "look at" and (in a sense) "vote on" would be good. Don't just willy/nilly start pushing things when we don't know what the actual plan is. Saying we're gonna have X percent EVs by 20XX isn't a real plan. Its more like a fantasy or at best a goal.
Regarding the 100 mpg car (hybrid or not) There is a good treatise on this subject I think I've shared before. My take away: It suggests that the car shapes would have to change significantly. Cars would likely have to be constructed as two passengers abreast (no console - more or less shoulder to shoulder like a small aircraft - maybe 40 inches wide cabin) and add seats behind for either two or four passengers. Cars width's would likely need to shrink to 2/3 of what they are now. Safety and other issues might arise. Safety is also an issue in general design but also weight.
Clearly the Prius has a remarkable Cd and improving it would be difficult - though possible. But a "skinny" car reduces air resistance a lot. I don't know if you would ever get to 100mpg without major improvements in the ICE part of the vehicle. There are potential improvements and actual improvements all the time, but the heat engine comes with physical limitations of efficiency. They are bounded by "laws" that are immutable. Metallurgy, friction, cost, safety, etc. all play into the formula.
Clearly, nothing is more efficient at point of use than an EV. Factoring in all the losses along the way might just give an edge to an 80 mpg car if it can be built. YMMV
Here is the "Do the Math" treatise on the "100 mpg Car." I think it's pretty cool and informative as well. Would love to discuss it with anyone who knows more than I do about the subject.
https://dothemath.ucsd.edu/2011/07/100-mpg-on-gasoline/
