They're free, after all. Say you're flying into a really confusing city, like Boston, and you have to get from the airport to your hotel. But it's a very qualified yes, even for Gersh and Haverland. It will also draw a map that can be printed out and used as a reference, according to both experts. Everything else is a crapshoot.
Exit ramps confuse the computer.
Haverland is also concerned about the accuracy of the data of smaller streets. He remembers one road that showed up on MapQuest more than a year before it was actually built. Finding Your Way Use a real map. Ask for directions. You might find out about closed roads or detours.