The Aventador is Lamborghini's flagship model, and it's the archetypal supercar. It's really big, really loud, and really, really fast.
The Gallardo is old but aging better than Harrison Ford. Visually, the Gallardo is restrained (for a two-seat Italian exotic), with no outlandish bodywork that puts flash ahead of drivability.
All it took to celebrate Lamborghini's first half century was 350 vintage and modern cars, drivers from all over the world, and prudent abandon on Italy's roads.