re: #3 Unabogie

And I am also going to disagree. According to the IPCC Report, our diets have a larger effect on the climate than how we power transportation, and changes in diet do not require a vast scale of innovation. These are choices we can make today.

ipcc.ch

If two-thirds of us were to eat the other third, it would greatly reduce emissions. (That’s assuming, of course, that we didn’t use charcoal.)