This Government was only elected to do one thing – deliver Brexit – and it can't even do that, so instead it's decided to jump on the air pollution bandwagon.

I mean, we've managed to get by with smoky motors perfectly well for years, apart from the odd cough on a hot day, and now suddenly we're supposed to believe a Ford Transit emits as much tar as a packet of unfiltered Capstan Full Strength (that takes something, and what lovely gaspers they were and all).