On: CO2 batteries that store grid energy take off globally

[tor825gl]

If you car was fueled by a fixed pipe which it travelled along, consuming all the fuel in the sections of the pipe that it moved past but no more, what would the cross section of the pipe be?

[HPsquared → tor825gl]

If a car gets 50 mpg (UK gallons), the fuel consumption is equivalent to a circular string of diameter 0.27 mm.

[throwway120385 → tor825gl]

That's looking suspiciously like integration.