A car-ramming at a Christmas market in Germany, which police are treating as an attack, is the latest in a grim series of events in which vehicles have been used as deadly weapons.
There have been a spate of such attacks over the past decade, some committed by groups but most by individuals. The motives – where they could be established – have varied widely. Some were inspired by Islamic militant groups such as al-Qaida and ISIS, which encouraged followers to carry out low-cost, low-tech attacks with cars and trucks. Others have been linked to mental illness, far-right extremism and online misogyny.
