Slipstreaming buses

There's this thing called brake lights, you generally find them on the back of buses.

There's also this thing called hand-eye co-ordination, you usually have it yourself, and it generally stops you from crashing into the back of a bus when it brakes.

Except that said bus can stop in half the distance that you can, so you're gonna stack anyway... blah blah... search:

http://www.londonfgss.com/post98558-35.html