First Episode that both Donald and Douglas appear together in since Part 2 of the 1 Hour Event "Rise of the Secret Soldiers" in Season 3.
The Explosives that Douglas attempted to blow up the Self Driving Limo urging Donald to keep reconstructing and modifying it appear to be the same ones he used when still evil to blow up the Original Lab at the Davenports' House in Mission Creek. In addition, the License Plate of the Self Driving Limo is the same as the one that Donald's Self Driving Car from the Season 2 Episode "Speed Trapped" that got blown up after Adam filled it up with gas not knowing that it's an Electric Car.
Originally shown as a single extended episode, this story later aired as parts one and two.