Size and power largely describe the worst models that are deadly to other vehicle drivers and occupants. Ten of the top 20 are large or very large pickups, including several heavy-duty variants with more powerful engines.[Given the laws of physics (start with F=MA), it’s not surprising that the biggest vehicles are most dangerous to others. However, the age of vehicles on the road; where and when they are driven are among the many variables in play here -AutoCrat.]