A faithful Polish GPS user apparently ignored multiple warning signs and drove his Mercedes SUV right into a man-made lake last week.

“It was still night time and he didn’t notice the road led into the lake. His GPS told him to drive straight ahead and he did,” police spokesman Piotr Smolen told reporters.

Smolen added that the warning signs had been in place for more than a year, since the road was closed. He also noted that — in spite of what some readers may have assumed — alcohol was not a factor in the accident.

The lesson in all this for GPS users: Like many of the satellite photos on Google Earth, the data on which your GPS unit relies when giving you directions may be seriously out of date.