The one in my car tells me to veer right on two stretches of straight road near where I live. I had a Tom Tom which would direct me through a layby and then back onto the main road. It alsotried to send me into a cul-de-sac on the way into the town of Dingwall. The road in question had not been a through road for more than 30 years.
You just need to be careful with them and not totally trust them.
Antara SE Nav 184 AWD Auto. Silver/Black