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16 September 2014 Last updated at 15:03 BST
The footage was made public as part of an appeal to trace a man wanted in connection with a series of burglaries across East Anglia and Kent.
It is believed the cars were being used by the wanted man. Both incidents happened in June.
Essex Police have released videos of vehicles which rammed a motorcycle officer on the M11 in Cambridgeshire and a police car on the M25 in Hertfordshire.