Continuous re-runs and repeats maybe? Or would that never happen these days?
Put the brakes on, back to track one of the playlist
That could play havoc if the satnav was integral, you'd never get where you wanted to go, you would keep going back to the beginning
And, if it was an electric ambulance that had a Doctor on board, would it keep changing it's interior layout? And presumably the Doctor on board would also regenerate. That could make coming home at the end of a double shift rather awkward. 'Mummy, a strange man has just let himself in the front door'. 'It's OK, Daddy was driven through some roadworks at work'. 'Oh, OK, but I don't think the long knitted scarf suits him'.
(yes, I know that regenerative and repetetive are not the same, but this is still supposed to be a joke thread
)