During the Credits
At the moment we do not have any information about Sunset Overdrive having extra footage during the credits.
After the Credits
There is an extra scene shown after the credits of Sunset Overdrive.
After the end credits, a Fizzco computer is shown displaying the initiation of a new directive where Overcharge supplies will be delivered worldwide. The scene cuts to the headquarters where a part of the building opens up and numerous drones carrying shipping crates of Overcharge rise and take off out of to deliver the shipments.
Special thanks to Armaan for the stinger submission!