I have a friend who delivers high cost cars. He accepted one for delivery, drove out of EU manufacturer's works and while driving was told by phone to keep driving at a fixed speed and return to works and under no circumstances to brake (!) or make an attempt to try to stop, as he had been sent out of works without a "key" inside car. Note "inside car or in close proximity to car". Key was a fob for your pocket, the works inspector had it so car started and my friend could drive many miles without a key in the car.. Brake could only be used when he was back inside works track.
He was glad he was a well trained professional driver but say it was a ride he will never forget
Impressed, I am glad I have not got toe wealth to get that expensive make of car.
With this 'proximity key' as next technology, the ideas here about stopping by key use to neutral will soon be history.
The disabled car may have had the same type of proximity key fitted with the modifications made to it.