Short Films : Looking for title of short film

Looking for title of short film

I'm looking for the title of a short film I watched on TV in the UK around 2000-something. I think it was a UK short. Here's what I remember:

Two young couples go on a road trip. At some point they stop at a gas station and one of the girls has sex with the guy of the other couple, or with someone at the gas station. Her boyfriend sees her but does not confront her straight away. They get back in the car and continue their journey. The movie ends with the cheated boyfriend (who's driving) crashing the car on some sharp metal rods that appear at the end of the road, killing everybody.

I've already posted this on the "I Need To Know" board, but got no answer so far. Another user suggested I post it here too, so here it is.

Any ideas?
Many thanks.

DrReeL
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