Whether you’re a fan of big, brash, and beefy grand touring convertibles or not (think Bentley Continental GTC or BMW 6 Series) you have to respect the new Mercedes-Maybach S650 Cabriolet.

Looking like a cross between the mammoth Vision Maybach Concept and a Mercedes S-Class cabrio, the Big-Band-era looks are hard to miss. Big 20-inch wheels with sawblade-like spokes; chrome accents on the doors and rocker panels; and quad exhaust outlets all make for some big, big presence, and that’s before you look inside or under the hood.

When it comes to the latter, all you really have to know is that there’s a massive 6.0-litre V12 stuffed in there that’s good for 630 horsepower and 737 – seven-hundred-thirty-seven – lb-ft of chassis-twisting torque. That’s enough to get you from Marseilles to Paris and back in something like 12 seconds.

Inside, gorgeous diamond-print leather is draped all over the seats, centre console, dash and door panels, as is a smattering of real-metal trim, most prominently on the gorgeous Burmeister speakers that sit on top of the rear tonneau cover.

Of course, all manner of Mercedes-Maybach’s safety and comfort tech is on-hand, including the patented AIRSCARF tech, whereby warming vents are installed at the base of each front headrest.

That’s all well and good, but it comes as no surprise that you’re going to have to pay for it. We’re talking in the neighbourhood of $300,000 US for one of the limited run of 300 cars.

Those aren’t grand touring convertible numbers—those are super-exclusive Bugatti-Chiron-type numbers. Actually, considering the first run of Chirons is going to be 500 strong, the S650 is even rarer than Bugatti’s world-beating super car.

That’s a pretty tall order, and it shows just how confident Mercedes is in its Maybach name.