Jeannie has been seen driving a red Austin Mini dozens of times in the series.
It usually bears the registration number BAP 245B from 1964.
However it would appear two red Minis were used in this story.
From the front the number 754 FLP is visible. As the car is seen leaving the usual number is seen.
Checking on the UK Government website her 59 year old car BAP 245B is still registered for use on the road some 53 years after the show ended.