My wife took the Vibe to visit friends in Indianapolis, which is about a three hour drive. She posted this on facebook when she got back. Hopefully it's big enough to read...
I congratulate her on getting over 40 mpg on the way home and call her a 'motorized vehicle virtuoso.'
Her response says; "I am so glad you are proud of me. I averaged 42 miles per gallon. I kinda like that scan gauge! Wish I could have one for the station wagon!"
But it's a '94, so I'll 'have to' build a MPGuino.