How are you getting 60 MPH with your Prius? Have you had a modification done? I haven't heard of anyone doing that well, even 50 MPG without a modification. We are getting about 45. Are you using the "EV Mode", perhaps?

My prius has never been modified in anyway. I am just using it for daily commute to and from work and for grocery shopping. All I do is slow down a bit to 60 MPG to 65 MPG on highways, and stick to 35 MPG to 40 MPG on local roads. I also use the pulse and glide technique. I do not understand how you are getting as low as 45 MPG? Even if I try to waste gasoline I could not get that low. There is a web called PriusChat.com. It may help you.

If I want to push the limit, I can get 65 MPG averaged over a whole tank of gasoline.

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