Jim's limousine appears as a stretch limousine, except unlike other limousines, this one is made out of "solid gold" as Jim puts it, and in color.
Role in episode
Jim's limousine is first seen where it pulls up to the Krusty Krab near the beginning of the episode. Jim himself steps out of the limousine where he walks into the restaurant he used to work at.
After reminiscing with his old friends Mr. Krabs and Squidward, and teaching SpongeBob how to properly cook a Krabby Patty, Jim steps back in his limousine to go back to his mansion. He wishes SpongeBob good luck with his job at the Krusty Krab and leaves in his limousine.