There’s been a scary increase in bicycle-vehicle collisions around the Seattle area the past couple years. My wife is confident in my not taking risks, but you never know. We’ve been using Google Latitude in my family since it was in Beta so she can just pull up the browser and check my progress home on the map. I’m told the kids have even asked to see the map so they can point out where daddy is on the map. I’m not sure how much value it really provides if something were to happen, but on nights when I’m late getting home - seeing that little icon moving always makes my family feel better.