A German 80-year-old driver was obediently following the orders on his dashboard system when his journey started to take a funny turn.
He came across a number of signs which told him not to go onto the motorway because construction work was being carried out.
But rather than take the initiative and realise that perhaps his sat nav wasn't aware of the road works, the man carried on.
"The driver was following the orders from his navigation system and even though there was a sufficient number of warnings and barricades, he continued his journey into the construction site," a police spokesperson said.
"His trip finally ended when he wound up crashing into a pile of sand."
Fortunately for the driver and his elderly wife neither was injured during the accident, although the man is reported to have lost some of his dignity and suffered bruising to his pride.