I had to fill up part way from the trip taken the other day and have recalculated my mileage after milking things a bit. Some EOC and coasting as much as possible on all the little hills (not EOC, just coasting). This resulted in 53.5 mpg. In terms of costs, that works out to $.06/km ($.09/mile) and I'm getting paid $.44/km. Pretty happy with that. I'm really not too sure I can top it, but I'm going to give it a shot
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