[elhigh]

I got to talking about "poor man's fiberglass" with Sweetie this morning. She's on board with hypermiling, even putting off trips during her work week when a tank is going really well so she won't mess up the streak.

"Well, I don't think T-shirt material is a good choice. It's too stretchy. Would fiberglass work?"

(Sputtering) "Uh, yeah! But I didn't want to drop a bunch of money into this, it's about economizing, after all."

"Sure, I get that. But we get old fiberglass curtains in the bale clothes all the time," Sweetie works in a thrift store and is over, among other things, the baled clothes that get sold by the truckload, "and we just have to throw them away. Nobody wants them and I don't have a recycler that will take them. Could you use fiberglass curtains to make your air dam?"

"I think I could."

"And how good a result could you get out of this work?"

"Five or six percent, maybe another three miles per gallon? Little less, little more."

"That sounds worth it. I'll keep an eye on the bale stream."

Score!