Altitude robs horsepower like a thief in the night. However a turbo or a supercharger can help make up the power loss. What's the fastest car from 0-60 MPH @ 1 mile above sea level? Is it the 300 HP turbo charged 2012 BMW 335i or is it the normally aspirated 400 HP Porsche 911 Carrera S? In other words can the turbocharger on the BMW make up for the power loss that the non-turbo Porsche will suffer @1 nile above sea level or is the wight and 100 HP power difference between the cars just too much. Watch this fun TFLcar Mashup to find out.