Guido is a small Italian forklift, who works at Luigi's tire shop as his assistant. Like his boss Luigi, Guido is an avid Ferrari racing fan who dreams of performing a real pit stop on a real race car. To better prepare himself, he practices tire changes at night on wooden practice frames he built in his garage. One of these days, he hopes to set a new world record for the fastest pit stop of all time. But until that happens, he continues his quest to further enlighten himself. Currently, Guido is reading Tire Changes for the Soul, Four Tires, One Goal. Guido ultimately realizes his dream when he works on Lightning McQueen's pit crew under the command of Doc Hudson. Guido deals with the derisive attitude of Chick Hicks' pit crew by single-handedly changing McQueen's tires in record time, something not even four experienced pit crewmen could do.
Guido is kind and eager, as he loves to make pit stops. He is also very determined, as he practices every night perfecting his speed.
Guido is painted several different shades of blue, with two gray forklift "arms" built into him.
Guido is based on an Alza Tutto Forklift, inspired by the design of the 1959 BMW Isetta.
Guido is Luigi's assistant at Luigi's Casa Della Tires.
In the English version, Guido speaks Italian, but in the Italian version, he speaks dialect.