"3) That's usually connected with terrorism."
Car bombs are mostly targeted mob and political assassination devices. They are used to remove a particular offending Maltese, Ukrainian or Italian journo, a Sicilian prosecutor who is refusing to take the handsome offer given to him, etc. While in some cases it may qualify under the definition of terrorism in most cases it is jut plain old mob settling scores.
(*)The guy is most likely a Sikh by the way (I am 95% confident as I was unfortunate to have a Sikh with the same family name as a boss and he mentioned he had relatives in that neighbourhood). So that mostly removes the more common terrorist motives for the "UK market" at present.