What model of car is Fillmore in Pixar's Cars?

Fillmore in Pixar's Cars is a Volkswagen Type 2.

Fillmore is Radiator Springs' peace-loving resident and the owner of Fillmore's Organic Fuel. His design is based on the Volkswagen Type 2, the rear-engined van commonly associated with the 1950s and 1960s and with the counterculture movement of the later 1960s.

The character's name references George Fillmore, an early figure connected with San Francisco's Fillmore district, while his organic-fuel business reinforces his alternative lifestyle. Fillmore is voiced by George Carlin in the first Cars film.

The Type 2 is often called the Volkswagen Bus, Transporter, or Kombi, depending on the market. That can make the answer look broader than it is, but the specific vehicle family behind Fillmore is the Volkswagen Type 2, not the smaller Beetle or another Volkswagen model.