The car is a 170 OTP of the postwar years and is from a member of the German Mercedes-Benz club.
The Mercedes-Benz LG3000 trucks are fake, they are from the former Army of East Germany DDR and are PRAGA trucks.
I am several times asked for movies myself and was with my Mercedes-Benz 170V Offener Tourenwagen and my 320 Pullman Cabriolet F in Blackbook and with the 170V in the series of the Krupp family.
Of course the companys are paying money for the cars at the filmset, a 170V to rent is cheaper than a 540K or a 770, a 170 OTP are easyer to find than a Prewar 170V with four doors etc.