If maximizing miles per gallon is always the goal are there any Prius driving instructions that explain the best way or the best speed to drive the car under different conditions. I assume at this point that I can experiment and learn over time what all works best from the power-train feedback but I would like to know some of this up front too so I can know that my Prius is working properly...or not. For instance... If I'm driving over a mountain pass and the speed limit and conditions are not exceeded or a factor would it be best to drive at 65 mph or 55 mph? Other situations like straight and level driving speeds? Does that battery in the touch-screen display ever show a fully charged state (full of bars all the way to the top)? Most of the time they seem to show 3 or 4 bars to mid-range. When it shows 2 bars the blue turns to purple. If on a long trip will they fill all the way up and turn a green color? Is there an article anywhere that describes all this? I haven't figured out nor am I clear on how to figure it out how to approach 60 mpg in the city or 51 mpg on the highway. I know that these are extremes the EPA has come up with that can't really be reached but I need to learn what I need to do to know how best to approach the highest mpg possible. If it always ends up to be just driving the car as slow as you can then that will pretty much mean staying at or under speed limits. If I'm on a highway posted 70 max am I really going to drive it at 55? I don't think so... I like to drive 5 mph over the speed limits but maybe that won't feel comfortable in the Prius? Well, you get the idea what I'm looking for I think. Thank you.