"Iron Man 3," released in 2013, was a significant box office success, grossing over $1.2 billion worldwide, making it the highest-grossing film of the Iron Man trilogy. It received generally positive reviews from critics and audiences, praised for its character development and action sequences. While some fans had mixed feelings about its portrayal of the Mandarin character, the film solidified Iron Man's popularity and contributed to the success of the Marvel Cinematic Universe. Overall, it is considered a hit.

In "Iron Man 2," Tony Stark, played by Robert Downey Jr., grapples with his identity as Iron Man while facing new threats, including Ivan Vanko (Whiplash) and pressure from the government to share his technology. By the end of the film, Stark publicly confirms that he is Iron Man during a press conference, solidifying his role as a superhero and setting the stage for future conflicts and developments in the Marvel Cinematic Universe. This revelation is a key moment in the film and emphasizes Stark's acceptance of his dual identity.

Yes, Elon Musk made a cameo appearance in "Iron Man 2." He appears as himself in a brief scene where Tony Stark meets him at a conference. This cameo reflects Musk's real-life interests in technology and innovation, aligning with the film's themes. The scene serves as a nod to the intersection of the entertainment and tech worlds, showcasing Musk's influence in the industry.

"Iron Man 2" is set in 2010, following the events of the first "Iron Man" film. The story takes place six months after Tony Stark reveals his identity as Iron Man, amidst growing tensions with the U.S. government and the emergence of new threats, such as Ivan Vanko. The film explores themes of legacy, responsibility, and the challenges Stark faces as both a hero and a businessman.