Bentley Flying Spur vs BMW XM

What's the difference?

In any other super car, it would seem deeply strange, wrong even, to loll (and LOL) in the back seats while a colleague blasts you around a race track at insane speeds, and not just because cars with V12 engines making 575kW and 1000Nm don’t normally have more than two seats.

The Bentley Flying Spur Speed is, of course, no ordinary car, it is a super sedan, a luxe limousine crossed with a rocket ship, and if Sir wants to get to the rooftop helipad in a spectacular hurry, then these are the back seats to be sitting in.

We flew to Japan, and the spectacular setting of the Magarigawa Club, a members-only race track carved out of the rolling hills outside Tokyo at a rumoured cost of $US2 billion, to try the back seats, and the driver’s seat, of the new and very impressive Flying Spur Speed.

BMW’s new XM is a tricky customer to pigeon-hole. Yes, it’s a huge, super-lux SUV and, yes, it’s all-wheel drive and features a station-wagon layout.

But it’s also a M-car and that infers super high performance. Weighing in one the wrong side of 2700kg, however, makes that a difficult task for any engineer.

This car also left us wondering if perhaps the glory days of M Division sports cars and coupes might behind it and SUVs like this one represent the road ahead.

But fear not: The CEO of M Division himself, assured us that the XM is a showcase for what an M badge can do, rather than a mission statement for the brand.

So, with that in mind, does this car have the wow factor that places it somewhere between peak oligarch and a motor-show concept car? Does it move the goal posts for big luxury SUVs? Does it even matter that it’s a plug-in hybrid?