Era Change is one of two special ability extras unlocked after completing the main story line of Driver: Parallel Lines.
The ability allows the player to switch eras. When the ability is unlocked, the player will be in the 2006 era, and can enter the menu, where it will be available under "Extras" found at the bottom of the options list. From here, after selecting they will see the loading screen - the font relating to the era they are switching to. Once switched, the player will spawn in one of the three garages. The player is able to drive any of the 2006 era vehicles unlocked and stored in the garage around in the 1978 era, however this merely applies to vehicles - 2006 era weapons cannot be used during the 1978 era.