> That wasn't a hybrid car, just a hyper-efficient gasoline engine in a lightweight body. One would think a modern plug-in hybrid would get well over 70 mpg.

> That wasn't a hybrid car, just a hyper-efficient gasoline engine in a lightweight body. One would think a modern plug-in hybrid would get well over 70 mpg. Including the electricity usage, or without it? Because my old 2013 Volt gets a real-world 150 mpg, if you don't count the electricity. But if you run it on gas alone, it only gets ~40mpg. Largely because, adding 1,000+ pounds of battery means the car will always be way heavier than a "lightweight body" 1991 subcompact.