Saw 'Rush' today and it seemed Rushed.
The pacing at times was ridiculous. I understand that it was more from the point of view of an ordinary cinema goer but still...
The two friends who accompanied me don't watch F1 or knew what this movie was about, the only thing they did know was it was a movie about cars. I guess the movie catered to such public. Even then while walking out I overheard a girl in the exit queue saying it was boring as it was more or less like a history lesson. In my mind - 'Yeah right, may be someone should strap you to the seat and make you watch races from 2004 and 2011 season.'
Overall watch the movie only to be entertained.
If you are really into F1 or just this rivalry then google and watch - 'The Real James Hunt' or 'Clash of the Titans'.