4TH Place: Co-pilot
First, the downside. Co-pilot costs money, and you have to pay a subscription fee to get updates. However, you do get traffic warnings, directions two turns in advance, and you can use it off-line. But the real reason this app is so high is that your dad can say “Well, I’m going to go driving with my co-pilot” and think he’s making a joke. (He’s not).