Rather than 'curse the darkness,' I've started measuring my 03 Prius, NHW11, 40 psi tire MPG on a level, wind protected stretch of road:

http://hiwaay.net/~bzwilson/prius/pri_MPG.jpg

When I've got all of the data, I'll put this on a web page with more technical details. Just thought I'd share it for now. The 31 miles per hour data will have be done over because too many of the runs gave 99.9 MPG even though I took pains to avoid regenerative braking.

Bob Wilson

Operation Iraqi Oil Freedom:

Automatic, stock, project car.

My other 1500 cc car:

Automatic, stock, backup car.
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