To switch its Ford Fiesta rally car from gravel to tarmac spec, the UK-based team M-Sport is only given 70 minutes to work, per World Rally Championship (WRC) regulations. And only four people other than driver and co-driver are allowed to touch the car at one time. It's not an easy job.
And as this video from Ford Performance shows, getting the Fiesta ready to run on tarmac after a gravel stage isn't just a simple set-up job, either. Basically, both the entire front- and rear-axle assemblies are replaced, which requires removing underbody cladding and other components. It only takes around 10 minutes to do the rear axle, which includes fitting a new set of brakes, and a little longer to do the front, since the steering rack has to be disconnected first.
This video is also great because it shows off all the cool components used in a modern WRC car. The spring and shocks are especially neat, as well they should be, since they're among the most important parts on a WRC car. You can't cheap out on suspension components when you've got to deal with all sorts of jumps.
So enjoy the video, and when you're done, go watch videos of WRC cars jumping.