I came across this thread at full fat range rover which featured two videos.
The first video discussed was a 2010-12 Range Rover 5.0 SC going past the speedometer.
This video generated many comments on youtube accusing it of forgery. There was even some debate on full fat range rover until xxxANGELxxx posted his video of 0-245 kmph in a 2013 Range Rover 5.0 SC on the autobahn. This second video clearly validates the first by showcasing acceleration which has even greter jerk.