Abbie Eaton's jacket disappears during the 2 minute head start she has on the GT cars.
Throughout the Scenes for the James' race to 'The Garden of Paradise' with Abbie, the cars switch from clean to dirty and dusty constantly. This is most easily noticed on the white Aston Martin DBS that Jeremy is driving.
Marco Polo didn't write about oil in Azerbaijan 1000 years ago. He lived in the late 13th and early 14th centuries.
When Clarkson is stuck behind the blue Transit van as they are trying to catch Abbie (who is supposedly way ahead), the Renault 9 can be seen stopped at the side of the road.