Thanks. I think this is what some of us were looking for.

I just filled up my 2007 Prius for the first time today. I've had the car just under a month and I got a tank MPG of 56.3. The last two weeks or so I was pushing about 59-60mpg regularly. I'm looking forward to some higher numbers on future tanks.

Back to the topic at hand, I filled up about 8.82 gallons with about one bar left on the display. I did not see the flashing indicator saying I was low on fuel, but I didn't want to chance it on the first tank. My calculations suggested that I had about another 190 miles to travel in an ideal world with no flexible fuel bladder and changing driving conditions etc. However, not knowing how the fuel bladder would come in to play I didn't want to risk it. From the looks of things, I am guessing I could've gone another 100+ miles easly.

 

Years ago when I worked at Pep Boys they sold a can to carry for an extra. It was very heavy metal, was wide and low. It was so solid you could probably drive a car over it. It had a threaded steel spout opening in it and the spout its self stored in a compartment under the can. I wonder if they still make those..If I were to carry a full can of gas I think I would feel safer with one of those..
John