Not just a Transit.....a Transit Diesel!
The reason for doing it was that when Jeremy Clarkson was trying to go sub 10 mins in a Jag diesel, Sabine said 'Hah, I could do that in a van'
AFAIK she couldn't, but got quite close, which was impressive!
I like it when she's shouting at the bikes to get out of the way cos they're too slow!