The Producers Tried To Buy Random Chargers
The Charger shortage during the filming of the show caused a situation that the producers weren’t ready for. So, the producers left notes on the windshields of private Charger owners to see if they were interested in selling their vehicles. There were a few bites according to sources but the majority of the shortage had to be addressed by using the AMC Ambassador (via Road & Track).
The Ambassador was the closest example of a car that they could find to supplement the Charger. The problem with the car was that it had to be heavily modified to work correctly in the filming. But the process was costly and time intensive and it almost derailed the filming more than once.