Commentary: I bought a Tesla to help the environment. Now, I’m embarrassed to drive it

A few years ago, I bought a used Tesla, not because I’m a car nut but because I had been a hypocrite. For years, I had been outspoken about the dangers of carbon emissions. Yet at the same time, I was driving an old gas-powered heap that got about 25 miles per gallon, and that sounded like a rocket launch every time I turned on the ignition.