The new LaFerrari supercar made its world debut at the 2013 Geneva Motor Show->ke228, but it looks like Ferrari->ke252 decided to keep quite, as we haven't heard much else on it since then. Lucky for us, as Ferrari->ke252 decides to keep secrets, we have YouTube user Marchettino who managed to catch the supercar testing at the famous Fiorano racetrack.

The car caught testing appears to be just a mule, but since we know how the LaFerrari->ke4626 looks, we really don't mind. What this video offers us is an up-close listen to just how sweet the LaFerrari sounds under accelerations and bot does that V-12 engine sound nothing short of bad-ass.

The LaFerrari is powered by a HY-KERS system that combines a 6.3-liter V-12 engine with two electric motors — one motor powers the driven wheels and the second drives the ancillaries. This system delivers a total of 963 horsepower and sprints the supercar up to a top speed of 217 mph.

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