The impOSCar can load fxbs (banks) and fxps (patches) by dragging them and dropping them directly on to the impOSCar front panel. As such many users keep these on the desktop for easy access.

If you use Logic 7.1 the .aupresets are placed in the following location:

User/Library/Application Support/Logic/Plug-In Settings/impOSCar

From here you select the aupreset you require from the 'Load Settings' option in Logic.