Not close to the book

Rating: 6/10 (30 November 2014)

I understand that this movie is set in "the roaring 20's" and that everything is supposed to be extravagant, but the way this movie was made stripped it of its credibility.
In the beginning of the movie, Nick Carraway is telling his story years later from an alcohol rehabilitation center. Right from the start, the story is altered. If the opening scene doesn't coincide with the novel, what other major changes can we expect? Is this movie going to be anything like Fitzgerald's novel?
Later we arrive at the house party scenes. The party at Gatsby's estate was just like I imagined. I was convinced that this was 1920's authentic, until I heard Jay-Z and Kanye West in the background. Maybe this wasn't a problem for other people but to me the music was out of place.
My last problem with this movie's execution was the car chase scenes. Something about the set made the entire scene look like a cartoon. Was I supposed to believe that Gatsby could actually drive 100 miles per hour without looking or steering? Or was the movie now completely fictional.
I expected a different movie. This movie was hardly similar to the novel "The Great Gatsby" and I think the director could have done a better job to make it like the book.