For me, the Wireless Grip would be useful at the auto race track. It's a small track, and my wife runs the booth. It would be great if when I take the pictures, she can get them right away. The booth is fairly close to the track, so I could probably set up a router there, and a range extender in the flagstand, and be good to go. That would make us a few extra sales if the drivers knew that once they won, they could immediately get pictures....once they're in the hype of winning all that money.