3 ms·
20 miles per gallon is about 0.1 square millimeters
- MatthiasPortzel 2y agoI believe it’s a chapter in Monroe’s What If where I’ve seen this before. If I remember correctly, the area (0.1 square mm in your example) is the same as the cross sectional area of a tube 20 miles long containing your one gallon of gas. Edit, link: => https://what-if.xkcd.com/11 https://what-if.xkcd.com/11