The Drawback.
I own this movie, and have watched a few times over the years. While it's definitely a classic. It suffers from way too much plot. Too many plot lines, too much detail, and way too long. A lot of scenes run long too with little or no dialogue. Save all the race related stuff, and chop out portions of the complicated and irrelevant love triangles. This movie would be perfect ac two hours.
On the other hand, LeMans has zero plot what so ever and becomes equally boring.