?Lift and coast': Why F1 drivers are told to save fuel | F1 technology

Why do F1 teams spend millions on their cars and then not put enough fuel in them? And could drivers be stopped from using 'lift and coast' instead of driving flat out?

Source: http://feedproxy.google.com/~r/f1fanatic/~3/vvIfWO_m9AU/

Silvio Moser Bill Moss Stirling Moss Gino Munaron David Murray