When the children put the truck's selector into 1, there is a sound effect of gears crunching. It is an automatic so no such noise would have been made.
Gordy McLeod shows a photo of him on his 30th birthday in Northern Rhodesia.
If his 75th birthday was in 2014 then his 30th birthday would have been in 1969, five years after Northern Rhodesia ceased to exist.
It became the country of Zambia on 24 Oct 1964.