Dentro da lógica dos carros, os ônibus funcionam como outdoors móveis, além de oferecer visitas guiadas a Londres
I love the detail in our films. I believe God is in the details. We put so much detail into this film. The more you look, the more you’ll see of car parts, car shapes. Every sign, every street name, everything… Every ad on the sides or on the buses or things like this are all unique to the car world and unique to whatever country you’re in. - John Lasseter
E os ônibus e os táxis poderiam levar os carros aos destinos desejados em troca de uma pequena taxa.
No one knows the sites, streets or shortcuts of London better than the jovial Chauncy Fares, a quintessential London black cab. - Pixar Wiki