I'm planning a trip across country, and want my friends to be able to follow my progress. To that end, I, of course, plan on using Waze during my travels. However, I think it would be outstanding if there were a "road trip" option of sorts, which would count the number of miles traveled since that mode's activation, and, say, automatically send out a message on Twitter when a given milestone is reached (e.g., 100/500/1000+ miles, crossing a state border, etc.).

...or am I just overthinking everything?