The series of disturbing crimes began in October last year, when the two 25-year-old men started driving to overpasses on the Autobahn near Münster in the dead of night intending to cause chaos and, according to the court, death.
In their vehicle they brought heavy objects which they would throw off the bridge onto the lanes below. Sometimes it was logs of wood, another time a park bench, and once a shopping cart, reports WAZ.
The random acts of violence took place seven times and over 20 cars were involved in the resulting crashes.
According to the judgement, on at least one occasion the two young men specifically aimed at a car passing underneath.
Now the judge in the Münster city court has sentenced them to seven and seven and a half year in jail, respectively.
They were “lacking in compassion” he said, adding that it would have been all the same to them if somebody had died.
Earlier in the trial the young men had explained their actions as the result of boredom.
Police were able to track the young men through their mobile phones. Investigators had been able to ascertain that the two men's phones were always active at the scene of the crimes.
Police also believe that the men were responsible for series of attacks on train lines. In 2012 metal objects such as bicycle racks were found thrown across train lines in the area.