What is the Optimal Alignment for MPG?

[suspendedhatch]

Theoretically 0 toe would give you the least rolling resistance, but you have to consider that putting force on the wheels can affect the toe. So then you try to set the toe to correct for this, namely on the drive wheels. But how are you going to measure that? A loaded dyno/alignment rack?

As far as camber goes, I'd say you'd want to maximize grip for accelerating from a stop, so camber should be close to zero on the drive wheels. Again you might want to take into account what happens when you hit the throttle. The front of the car lifts up, and this gives you a slight positive camber on most vehicles.