Or an option to say, "Hey Google, I'm fine until I get to the highway" or if Google proactively said, "I noticed that the last 5 miles of your route is on roads

Or an option to say, "Hey Google, I'm fine until I get to the highway" or if Google proactively said, "I noticed that the last 5 miles of your route is on roads you have not traveled before. Would you like turn-by-turn directions for the last 5 miles?"