Optimum speed for best MPG, Anybody? Options

[Legit94GT]

So every car has an optimum speed to achieve the best MPG, I am curious if anyone knows what the optimum speed is for our celicas?

Both 5SFE and 7AFE. I know there is an acutal formula to figure it all out, but i dont have it anymore:(

thanks

[creis]

optimum speed for best MPG, I dont think there is such a thing in terms of practical numbers, there are far more outside affects to your MPG then speed. wind direction, hills, rain, snow, sand dirt, road bumps etc. big gains can be seen from following semi's (or similar huge boxes) (NOT TO CLOSE!) due to the pocket of air there pulling behind them, going against the wind significatly increases the amout of power your engin has to put out to keep at speed, with the wind allows for much less power thus much less ges. similar but more drastic is going up hill or downhill, one trick to saving gas, going up hill is let the car slow down gradualy, dont keep it at speed, going down hill, let the car speed up (coasting) then when you get to flat it can coast further dropping back to speed limit.

I would say optimum speed for best MPG is dependent entirely on the driving conditions, but can probably be averaged.