The tunnel network is limited to the city. For any mission outside the city limits, such as "Scam Camp Much?", the spies must use a vehicle.
In "Alex Gets Schooled" it is shown that the system works in reverse.
In "Evil Pizza Guys" Jerry is WOOHPed.
- Similar tunnels to the 'WOOHPed' system are seen in 2 episodes:
- In the spin-off series "The Amazing Spiez", the main characters were also WOOHPed and it included a visual of the word as a nod to the comic style of the series.