While Pagani is testing our nerves with its shadowy teaser videos, Youtube user 'Marchettino' caught the Italian supercar on test in its homeland. The first clean-sheet design Pagani in years, which is currently known by its C9 codename, is pegged for a debut at the Geneva Salon in March. The gullwing-door supercar will be powered by a new 6.0-liter bi-turbocharged V12 sourced from Mercedes-Benz's AMG division, tuned to deliver somewhere around 700 horsepower and over 1,000 Nm or 738 lb-ft of peak torque. Video follows after the jump. Read more »