Dieselgate has reared its ugly ahead again, this time in the UK, getting on for five years after Volkswagen admitted cheating on US emissions testing, sparking a saga that has cost it billions in fines and other costs, such as setting up the nationwide EV recharging network Electrify America, led to tens of thousands of perfectly functional cars being parked in the desert, put executives in US jails as German prosecutors tried to achieve likewise (with less success) this side of the Atlantic and generally tarnished its reputation. But this week's news was not about VW.