Yeah that was the point, I guess Spidey just left his sense of humour at home that day. Carbombs - 100% were driven in by the terrorists having been stolen in another part of the country at some point in the past (from weeks to years) and the bombs prepared before hand. The occured all over the country. The majority in London, as Northern Ireland was more likely to be sectarian shootings and assasinations. However my home town of Manchester was subject to the largest bomb ever detonated on the British Isles, and basically any city anywhere was a target, London was just more symbolic.