If you were to have Alan from "The Hangover" and Tony Stark go on a road trip together, this is what you get and it is not pretty. Robert Downey Jr. seems to be just going through the motions of acting making his character unlikable. Zach Galifianakis does aa good job, but this is not his best work either. The story is one we have all seen before and this film adds no new flare to the "road trip gone wrong" category. Most of the jokes are not funny, some are, but most are not. This movie could have been a lot more fun, but it just falls flat and is largely forgettable. With the two leads this film has, we should expect better. This movie was a big let down. There are some good moments, however. This is a movie that if you missed, you do not need to go back and watch. Overall, I give this movie a 3.5/10.