An air car was a type of vehicle used by many species. They were generally similar to a standard car, but with flight capability.
Air cars were in use on Zanak, as well as on Gallifrey, where Romana I was given one for her seventieth birthday. (TV: The Pirate Planet) Air cars were also used by the Ice Warriors. (COMIC: Descendance)
A type of air car was used on New Earth. (TV: New Earth, Gridlock) Another type of air car was used on Carthedia. (PROSE: The Dalek Generation)
On Kirith, the Panjistri used air cars to travel from the Skete of Kandasi to the beach. (PROSE: Timewyrm: Apocalypse)