[ExI] Cost of synfuel was Air-powered cars

[Damien Sullivan]

> >So what do we need for carbon neutral synthetic gasoline?

I've seen it suggested that synthetic methanol would make more sense
than synthesizing liquid hydrocarbons.  Not as energy dense but close;
supposedly burns better in IC engines, at least with a bit of tweaking;
and it's liquid right away, while with hydrocarbons you have to go
several stages past the single-carbon point, and each stage loses energy
efficiency.

-xx- Damien X-)