The project is partly-funded by the U.S. military and has taken the hand-signals already used by soldiers as inspiration for the symbols on the vest -- such as stop, run, turn left or turnright.
She said the Passat came "screeching" round a corner, spinning in a handbrake turn, swerving from left to right, then mounting the pavement and hitting a grit bin before speeding away.
Burning 3, 785 liters of fuel an hour, they turn left and right and speed up and slow down as air traffic controllers on the ground try to arrange them like a conga line for their final approach to the runway.