- For the the 1957 theme, see HO 1:87 Vehicles.
The DUPLO Cars sets feature characters and scenes from the first Disney Pixar's Cars movie from 2006, for re-celebrating this movie as well as starting the promotion for the upcoming sequel, Cars 2, in 2011. System cars sets were released in May, 2011 featuring some sets re-celebrating Cars and some promoting Cars 2. The teaser website for the System Cars was launched in February.
- Originally, LEGO's Canadian rival Mega Blocks had the licenses to Disney/Pixar's Cars.
- The teaser website had "secret" videos, which showed behind-the-scenes peeks of how the Lego Designers worked. There were six in total.