Now that the vehicle is complete, technicians turn their attention to the interior in this third video, more specifically for the well-known seat fitting.

In part 1 we saw the marriage of the powertrain and body in its core structure. Part 2 showed the rest of the body being assembled while the suspension and driveline received final adjustments.

Now that the vehicle is complete, technicians turn their attention to the interior in this third video, more specifically for the well-known seat fitting. This is typically the first time the driver comes into contact with their vehicle as the seat is molded to the driver's body for a perfect fit.

The time-lapse video shows a technician preparing a plastic bag filled with polystyrene foam which is laid into the seat shell. Then the driver sits in the seat shell on top of the foam filled bag. As the minutes pass by in the time-lapse footage, we can see the driver's body weight displacing the foam upwards and around his posterior side. Once the foam has dried, the driver carefully steps out, and a perfectly shaped cast of the driver's body is left. The cast is then used to mold the perfectly fitting carbon fiber seat shell.

Another task that is completed while the driver is sitting in the foam, technicians take the opportunity to measure the driver's head position in relation to the roof and roll cage.

As we have previously reported, the SLS AMG GT3 is powered by a 6.3-liter (6208 cc) V8 engine which is "virtually identical" to the one used in the standard model. It is connected to a six-speed sequential transmission which enables the car to accelerate from 0-60 mph in 3.7 seconds and hit a top speed in excess of 186 mph (300 km/h).