If we're talking chain of survival, then yes, absolutely, every vehicle should have one and where possible the AEDs could be the same model or have the same sort of alignment with the ones that are being used at our level. Even once an AED has been used and the pads are already on, it's much easier if the next level of assistance can simply plug their electrodes into the pads that are already on. If you have Zoll, right from the base of our medical first responders, all the way to police and to ambulance servers, they don't have to take the pads off. They plug it in and away they go, then we recoup our pads.
Yes, I'll clearly say that every vehicle should have an AED in it.