On our way up to this hackathon (all the way from Atlanta!) we came across all kinds of people on the open road. Most were fine, some were jerks, and even fewer yet were very generous.
We thought it would be pretty interesting to have drivers be accountable for how they are on the road when they're not driving so we made Road Rant.
This multi-platform device consists of an android app, an ember.js web app, and a rails backend. Together they allow users to easily post a review of someone's driving, look them up, and even see where there is the highest volume of 'mean' drivers.