Minimal Best MPG Throttle Display

[GasSavers_maximilian]

I was thinking about how to display the throttle position for optimal fuel economy in the simplest, most compact manner. That way your mounting options could be enlarged, maybe allowing locations where you don't need to take your eyes off the road. Anyhow, what I came up with was to use a 10 segment LED bar graph that is dual color (red & green). Of course you could use a different number of segments. If you are going too slow, it displays a green bar, starting with your current throttle position and ending at the optimal one. If you're going too fast, it displays a red bar, again starting at your current position and ending at the best one. I guess you could pulse back and forth fast (or just use a tricolor LED display) for when you're on target. Have to test it. You'd just ignore the indicator when other factors (like highway minimum speed limits) contradicted it. It would still give you the direction to aim for when possible. Cutesy stuff like having it "walk" the led from current position to goal would just be annoying I suspect. I know the concept's darned easy, but I drew up a picture and it gave me an excuse to try out Photobucket. Anyone have any thoughts on improvement/problems? Thanks.