Lamborghini has been turning a profit in recent years, but it doesn’t mean that the company will be splashing out on expanding its lineup anytime soon. Instead, the supercar maker will focus on replacing its core models first, but the company’s chief, Stephan Winkelmann, has hinted that a secret project dubbed LMX is currently underway. The car will be share much in common with the Porsche Cayenne and Audi Q7, and will be powered by a V10 drivetrain riding on air-suspension. A smaller 4.5L V8 version may also make an appearance, as well as a rumored diesel model running Audi’s 5.9L V12 TDI. Power for the oil-burner would be in excess of 500bhp, with torque up around the 1000Nm mark.

Before this crossover model is released, the Bologna based sports carmaker will update its Murcielago hero-car by adding the Gallardo's space frame chassis. A V12 engine and AWD will remain as standard, with development work to be shared with a replacement for the Gallardo. There’s no word on when these cars will be arriving in showrooms, but it’s at least several years away.

In the meantime, it looks like the roadster version of the Murcielago LP640 will be hitting the display stands at tomorrow's L.A. Motor Show and then at the Bologna Show on the 7th of December. Power should be the same as the hardtop, so expect 640bhp from the monster V12, giving it the performance to reach 60mph in around 3.5 seconds, all the way to a top speed of 210mph.

Follow the jump to see the rendering of the Lambo crossover in full as well as actual spy shots of the car testing.

[Source: Winding Road]