Google maps is amazing. I was on my way to Detroit Airport, I live about 1.5hours away. Anyways, I wanted to double check directions so I used google maps, and it came up with directions that were going to take me 2 hours. I laughed thinking, 'oh technology, 2 steps forward, 1 step back'. So I drove down the way I already knew and was just double checking. With twenty minutes left in the drive, theres a deadstop traffic jam. Highway is closed. Turns out entire highways flooded in Detroit around 6-7am, and when I googled directions around 830am, google knew not to go that way, but I didn't. Made it to the airport 3 hours later, with a flight 6 hours after that. I had never been so impressed with google maps before this though. How did it know not to go that way so fast? I literally just drove right into it no warning or detour signs.