Mini, like so many other car companies, is looking to quickly electrify its line-up of cars. We’ve already seen that with the new Cooper, while the upcoming Aceman crossover will be battery-powered first and foremost. Sitting at the top, however, is this – the Countryman Electric. It’s a plug-in version of Mini’s latest Countryman, which is the brand’s largest and most spacious vehicle it currently offers. We’ve already been impressed by the petrol-powered Countryman, but what can electric power do to the whole package? We’ve been finding out. What’s new? From the outside at least, it doesn’t …