If anyone is counting, this is the fourth teaser image that Pagani has revealed of their latest hypercar, the Huayra Roadster. And, we’re still not any closer on figuring just how it’ll look; perhaps it’ll be leaked in all its splendor before its debut at the Geneva motor show next month - we really hope so because we’re getting a little tired of all these murky photos that don’t show much. Maybe we’re just old and irritable…

Anyway, the latest image of the open-top version of the Huayra reveals a bit of the engine compartment and it’s probably the most exciting pic of the bunch so far. Why? Oh how about the fact the motor - a mid-mounted twin-turbocharged Mercedes 6.0-litre V12 - could make around 730 horses? Yes, very exciting indeed – and in fact, this engine will make the Pagani Roadster one of the fastest drop-top hypercars in the world. It’ll sit behind the Hennessey Venom GT Spyder (it has a twin-turbocharged 7.0-litre V8 and a top speed of 427kph) and the Bugatti Veyron Grand Sport (its quad-turbo 8.0-litre W16 engine gives it a top speed of 407kph) but we’ll have to wait until March 7 for the official figures from Pagani.

Last week, Pagani founder and CEO Horacio Pagani said the newbie was “the most complicated project we have ever undertaken” and now he says, “As we moved forward with the Roadster, we decided to give her a bit more of an edge in order to create a slightly more aggressive shape than the Huayra Coupé.” That means it’ll feature quite a few visual changes and aero addenda to keep this one glued to the road.

The Huayra Roadster will be an ultra-exclusive model just like the Coupé; Pagani only made 100 of those with an extra 20 for the even more limited Huayra BC.