Straight Ahead

"In fifty yards, turn left."
He was dependant on his satnav in the strange city, but he wished it wouldn't address him in such a curt fashion.
"Alright, alright," he said in reply.
He turned left, but he was too early. It was the next street he wanted.
"Recalculating route."
He continued to drive.
"Take the next right."
He did as he was told and turned straight into a dead end.
"Recalculating route."
He reversed out of the road and headed back the way he had come.
"Recalculating route."
"Get on with it."
He turned left and then left again. He was now on the road the satnav wanted him to take in the first place.
"Recalculating route."
After a few seconds the satnav had figured it out and emitted a ping.
"At the next junction go straight ahead."
He did so without thought and he was in the river before he knew it.
The satnav felt smug.