The methyl-butyl ether we add to gasoline is already causing massive ground water problems.
No matter how you slice and dice, running a civilization on auto transport isn't going to cut it. The Fates are kind.
It's the propellant that replaced CFC's in hair spray cans.
DME is much easier to remove from water than MtBE, since it is a gas and MtBE is a liquid with a fairly high boiling point.
DME has an atmospheric half-life for a few days.
DME is the perfect fuel.
It can, under some conditions act as a mild anesthetic, but nearly so well as its cousin ethyl ether.
