I recall one developer talking about the differnece in dealing with Ford and TVR, and they were saying TVR were pretty much allowing them to include what you want and weren't bothered about the cars being damaged in the game, they pretty much said do what you want. Ford were more particular, they had to use certain cars, they were allowed scratches and dents in the bodywork but doors couldn't open or fall off and the car couldn't be damanged to the extent it was undrivable etc.
Of course Ford and TVR are on oppsite ends of the spectrum, not just in atitude in this example but also in scale and size of the business, so it makes sense that Ford would be more particular and have a more marketing focused appraoch to giving out a license.