For context the whole thing came about because Sabine has coached Jeremy Clarkson to get a Jaguar Diesel around the track in under 10 min. He made it just and some comments from Sabine lead to the second challenge to do it in a van.
So she was 8 seconds slower than a Jaguar driven by Jeremy, who drives for a living :-)
Definitely try to find some snippets of those episodes, very entertaining