"On Tuesday at a car show in Geneva, Lamborghini is taking the wraps off the first production car to come fully through the lab, through its entire gestation process.<p>Called the Aventador, it's a $370,000 Batmobile that goes from zero to 60 mph in 2.9 seconds.<p>The Aventador's bare body -- before the V-12 motor and other parts are added -- weighs just 504.9 pounds."