Lightning McQueen receives the Dinoco sponsorship at the end of Pixar’s Cars.
Dinoco is one of the most recognizable fictional brands in the Cars universe. Its blue-and-orange branding appears on race cars, fuel stations, and other elements of the series’ automotive world. The company is associated with Tex, a wealthy blue car who owns the Dinoco racing team.
At the Piston Cup finale, Lightning has the opportunity to accept Dinoco after winning the championship. Instead, he asks Rust-eze to remain his sponsor because the Rust-eze owners, Rusty and Dusty, supported him when he was an unknown rookie. Dinoco then offers him a racing opportunity as a reward for his sportsmanship.
This detail is easy to mix up because Lightning does not simply switch sponsors in the ending. He keeps Rust-eze as his primary sponsor, while Dinoco becomes connected to his future and offers him a chance to use its famous helicopter.