Noun: The poor, hapless driver who has been pulled over by traffic cops for speeding on a highway or country road. The 'speedgoat', through their sacrifice, allows all other drivers to speed past with impunity and without paying the
ultimate price.
While passing, with a sigh of relief, we thank
the highway gods that we are not the 'speedgoat'. But
inevitably, that day and that siren comes for us all.
From the pig latin: scapegoat
Mark roared with glee as he zoomed down
the highway, "Did you catch the look on that speedgoat's face?"
"Better
watch it, sunshine," replied white-knuckled Jane from the
passenger seat. "The way you're driving, your time will come!"