Hi Dan,

Interesting post, thanks.

For those who have not undergone the proper indoctrination, there are 231 cubic inches in one gallon. I was not aware such a unit was used, but google knew ..

So the accuracy is 1/192.5 -- about half a percent as Dan wrote. Or up to two US pennies for a Prius fill of 10 gallons.

btw, congrats on the *brilliant* FE.

R2-E2, 2G Prius.
Highway/City/Husband/Wife MPG: 56.5, as of 12/2005, 26K miles

Jac Nasser, Ford President: "We are planning to launch a hybrid version of
this car [P2000] within this year [1998]. We will also make FCEV available in
2004."