007 films have been an institution from the early 1960s all the way through today with the current crop of films starting Daniel Craig piloting some very capable Aston Martin supercars. But conditions weren't always this ideal for a franchise known for great chase.
It really comes down to two factors, the first being the 1970s. They nearly destroyed the auto industry as a whole, and people simply had to make due with the materials at hand. Which, in many of these cases, wasn't much, and the trend continued well into the 80s. The second factor is blatant corporate shilling - how else can you explain that Z3 convertible?
Autoblog provides us a case study in some of the less-choice Bond mobiles.