Re:Volkswagen enters battery business with $20B investment
by ben_w on Thursday July 14, 2022 @07:18AM
(#32094452)
Same reason we give fuel efficiency in e.g. litres per km rather than square meters.
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Re:Volkswagen enters battery business with $20B investment
by anon_123g987 on Thursday July 14, 2022 @07:52AM
(#32094692)
"20 MPG is about 0.1 square millimeters," according to https://what-if.xkcd.com/11/. "If you took all the gas you burned on a trip and stretched it out into a thin tube along your route, 0.1 square millimeters would be the cross-sectional area of that tube."
It's simple dimensional analysis (https://xkcd.com/687/).
Re:Volkswagen enters battery business with $20B investment
by konschubert on Thursday July 14, 2022 @04:11PM
(#32100897)
So, X litres per km is X * 10^-3 m^3 per 10^ 3 meter. Which is X * 10^-6 square meter.
Cool. So my car has a fuel efficiency of 0.000007 square meter :D I love it.