In Pixar's Cars, Rust-eze sponsors Lightning McQueen before he joins the Dinoco team.
Rust-eze is a fictional automotive product brand associated with brothers Rusty and Dusty Rust-eze. Its sponsorship gives Lightning his racing opportunity, even though he initially feels embarrassed by the team's image and dreams of moving to Dinoco.
The sponsorship becomes more meaningful as Lightning matures. Rusty and Dusty support him despite his early arrogance, and Lightning eventually recognizes that loyalty matters more than chasing the most prestigious-looking sponsor.
Rust-eze remains central to Lightning's identity throughout the Cars franchise. The brand's name is a playful reference to rust removal, while its orange-and-white appearance helps distinguish Lightning from other racers.