I'll admit to being a techno-geek. I can't mow without my MP3 player, and I always have a digital camera with me, be it my cell phone or my real phone. I also have a GPS unit. I use it for various purposes, including as an odometer, which it can be very useful as. I was wondering if anyone's every used a GPS or any other device to measure how far they actually go in a day of mowing, not measuring drive time, only working time. I'm figuring it has to be a lot.