How well are those companies going to keep doing after the subsidy flood dries up?
And what about the indirect subsidies? Fill your electric car from the grid and, for the moment, you pay no fuel duty. Drive it into London and you pay no congestion charge, despite your Tesla taking up more space than a Fiesta, and don't forget the free parking at charging points.
Sooner or later Government will cotton on to these "tax avoidance" schemes, and move the goalposts. How will Musk & co. adjust to that?
Biting the hand that feeds IT
