With their latest tuning program for the Mercedes S500, German tuning firm Inden Design hoped to bring the car’s overall performance numbers to the same levels as that of the S65 AMG.

We don’t know exactly what these guys had in their coffee when they made their release, but last we checked, the S65 AMG has over 600 horsepower under its hood, whereas their tuning program for the S500 tops out at 420 horsepower. Miscalculation? Perhaps. Ambitious? Oh, yeah.[...]

Source: topspeed Tuning