AC Schnitzer Tension M6 Concept

Psychologically, tension means excited expectation or apprehension of a proposed event which is either particularly desired or feared.
Physically, tension describes a force within a resilient body.
Mechanical tension (symbol σ) is the force per surface unit which acts in an imaginary section plane through a body, a fluid or a gas.
Tension is also the most important instrument of playwrights and authors for motivating the viewer and reader to watch and read further.

The applicaton of all these different definitions to a single vehicle - viewed from all aspects - is demonstrated by AC Schnitzer at the IAA 2005 with the Concept Car:

TENSION

The basis for the extensive conversion could only be one vehicle: the 507 HP BMW M6, which underwent a performance upgrade as the first development stage. Optimising the entire engine management system and fitting a new AC Schnitzer exhaust manifold system with special catalyst, sports rear silencer with chromed tailpipe trims in right/left combination in "Sports Trim Design" help the TENSION achieve an incredible 406 kW / 552 HP. The Sports Trim Design will also shortly be included in the AC Schnitzer sports rear silencer range exclusively for the new BMW M vehicles.

Even more imposing than the pure engine power is the maximum torque of 540 Nm at 6200 rpm, which pushes the driver back in the seat and catapults the TENSION explosively to 100 km/h in just 4.5 seconds.
The AC Schnitzer Vmax delimiter means that the acceleration thrust continues to 325 km/h before the speedo needle can relax - where driving conditions allow.

http://www.netcarshow.com/ac_schnitzer/2005-tension_m6_concept/