Sorry, ignore this post and go to the poll instead. I didn't configure the poll thing correctly.

(Moderator, please delete this thread, I have relisted it as a poll.)

I think you #2 option is the best way to see the techonology become mainstream. I think there is a balance that needs to be achieved. I also think you need to re-evaluate where the balance point is model by model. Obviously someone buying a Corolla sized vehicle will probably be more oriented toward fuel economy, while a someone looking at the Highlander will be more oriented towards power.