but enough of the unborn chicks ( - that thought was only in my head a moment , but it towed an image not splattered yolks and placentas but maimed and crushed little yellow chicks all over the police car malformed talons shrieking against the metal bonnet as the wind dragged them off into the night fighting against the windscreen wipers as the blades arced like boxers ' punches and repeatedly slammed their heads popping their eyes as their bodies flattened between tarmac and spinning discs of treaded rubber - ) found their target that soon the cops had no visibility through the windscreen - eggman recoated the windscreen quicker than the wipers could scythe it clean - and were forced to slow down .