I never thought that car bombs are legitimate and accurate weapons of destruction and murder until I started reading US news accounts of car bombs by armed rebel groups in Syria. Look at the New York Times: "Also on Monday, the Nusra Front, an Islamist group allied with Al Qaeda
in Iraq that Washington has declared a terrorist organization, posted a
statement online taking responsibility for a bombing a week ago at the
headquarters of a pro-government militia in Salamiya, in Hama Province.
The group said at least 42 people were killed."