Lamborghini presents the Gallardo LP 550-2 Valentino Balboni to honour the testdriver Balboni who has been with Lamborghini for over 40 years, but is now retired. The Gallardo LP 550-2 is a rear-wheel drive supercar with 550 horsepower (405kW) output coming from a 5.2-litre tweaked V10 engine. The Balboni model is the only current Lamborghini that delivers its power to the road via its rear wheels alone.