My sat nav got me into an infinite loop
You'll be pleased to hear I'm not still there. I spotted the issue and exited the loop after the first iteration. It went like this Heading north, Satnav said "turn left", after a few hundred yards again "turn left" (so now heading south) then again "turn left" and the forth time - oh look I'm back on the road I started on, heading North and Satnav says there's a left turn ahead, looks familiar. I'll disobey!