Caramel

As I drove home, I discovered that the road all the way from the roundabout by the older Mersey tunnel up to the entrance to the newer Mersey tunnel was completely jammed - so there was little prospect of using the new tunnel.

In addition, a bus driver, who I assume had forgotten he was driving a 30-foot bus rather than a mini, had blocked the junction giving access to the old tunnel - causing the gridlock to spread back up Tithebarn Street - and preventing me getting to the old tunnel.

What was the cause of all this mayhem? A lorry had spilt caramel powder the entire length of the new tunnel and the police were worried that it would solidify if it got into the drains.
(Liverpool Echo)