The newly revealed BMW 7 Series is a vast and imposing flagship. That nose design aside, its also rather more retrained and classically styled than recent BMW models.

But under that 5.2-metre-long body, the 7 Series represents the future of BMW and also demonstrates the best in long-range thinking.

The only difference between the fully electric i7 and its hybrid sisters is an extra 10cm of bodywork, hidden between the doors and the sill. Indeed, if it was weren't for the chrome strip on some models, you would never detect it.

But that strip of bodywork shows just how quietly brilliant this new car is and how, arguably, is much better suited for the next decade and more than any number of dedicated EVs currently rolling off the production lines.

Engineering an architecture that can be produced as an EV, a plug-in hybrid, a 48V mild-hybrid and a pure-ICE vehicle is a huge achievement. No surprise then, that BMW bosses told me that work on the new platform began around six years ago.

That would been a few months after the Dieselgate affair blew up in Europe in September 2015. It would have become quickly obvious to BMW’s philosopher-engineers that EU legislation would inevitably pivot away from being mostly concerned about fuel economy and towards the California-led concerns about air quality.

Other impacts aside, that pivot would clearly mean a bigger emphasis on electric vehicles. The firm has been ahead of the pack with the BMW i3 EV and BMW i8 plug-in hybrid, but it saw these cars as specialist models, built around clever composite structures and styled very differently.

At the time, BMW was also investigating electrification by means of using a range-extender drivetrain, even demonstrating a 5 Series GT-based range-extender concept to the press.

But like Volkswagen, BMW figured Dieselgate meant that pure-EVs would now be on the legislative menu, and the result of those decisions have recently arrived in the form of the BMW iX, BMW iX3 and BMW i4.