We’ve been blogging all week about Cars.com’s latest Mileage Challenge, in which we took four hybrids through a day of Chicago traffic. Along the way we logged more than enough seat time to size up the competing drivetrains. Though different in many ways, all of them build on the same formula: a gasoline engine aided by one or more electric motors, which draw power from a high-voltage battery that’s recharged by the brakes. (Got all that? Next up: quantum physics 101.)
Read on for our thoughts.