This is Infiniti’s four-door supercar

This is the Infiniti Q80 Inspiration, and it's a four-door, four-seat super...thing. Infiniti calls it a ‘fastback': we call it bloody huge.

The Q80 (a hint at the sort of Middle Eastern customer at which this thing is being pitched?) Inspiration weighs in over five metres long and two metres wide. It's just 1.3m high and features monster 22in wheels. Whichever way you look at it, it's gargantuan.

It hints at an upcoming Infiniti range-topper, a statement of where Posh Nissan wants to head in the near future. Hence the big number: Q30 is the baby Infiniti, Q50 the mid-range car (hence the '50'), and 80 for this range-topper.

No specific word on the powertrain, but we're told it'll be an electric hybrid setup with "additional technologies", including adaptive damping for the suspension. There is word on the body, though. The doors open ‘portal style', there's lightweight acoustic glass, and an interior sculpted from carbon-fibre, aluminium and many leathers.

Infiniti design director Alfonso Albaisa says: "In Q80 Inspiration, we wanted to capture that unforgettable feeling when you experience something important, something beautiful, something magnetic for the first time."

We'll confirm whether this is the case when see it properly for the first time in Paris next week, where the Q80 makes its motor show debut. Until then, have a look at the picture above.

What we can tell you about this car, however, is that its design will influence a smaller, BMW 4-Series rivalling Infiniti coupe. Infiniti's chief creative officer Shiro Nakamura exclusively revealed to TopGear.com last week that work was already underway on a compact coupe, which we'll see next year. Possibly with a GT-R-engined 560bhp version too...

Infiniti's two-door BMW coupe rival is coming