Running on Empty and Guessing: The Long, Strange Delay Before Cars Could Tell You How Much Gas Was Left
For the first two decades of the automobile era, drivers had absolutely no way to know how much fuel was in their tank — short of sticking a rod in it or simply running dry on the side of the road. The fuel gauge we glance at without thinking is a surprisingly recent invention, and the story of why it took so long reveals something uncomfortable about how casually early automakers treated driver convenience.