Was it on fire?
They should call it the Chevrolet Subsidy.
If a certain someone gets his way and electricity quadruples in price, the economics might change significantly. As well, the batteries need to be replaced at some point which costs several thousands of dollars. As well, the battery disposal probably isn't so great for the environment.
Not sure of the car's top speed while electric; it is possible the car that passed you was running its gasoline engine at that time?