Rusty and Dusty Rust-eze

Rusty and Dusty Rust-eze are two brothers who founded Rust-eze Medicated Bumper Ointment, which is Lightning McQueen's sponsor.

Bio
Rusty Rust-eze and his brother Dusty like to help out their fellow rusty cars almost as much as they like telling jokes, which is why they invented Rust-eze Medicated Bumper Ointment.