Electric cars, sure, why not: 400 horsepower and range up to 300 miles. Never buy gas, just plug it in and let the power grid charge it. I’m certainly on board if it cuts greenhouse gas emissions, slows global warming and saves me money, but how about trucks?

Elon Musk, who has big plans and the financing to implement them, will introduce the Tesla Semi, with a range of 500 miles, and a national network of solar powered charging stations as well. This has led to an avalanche of investors such as Pepsi, which ordered 100, and Budweiser, which ordered 40. This also represents an amazing amount o...