I really wanted to build this... a small fleet of drones that would find the nearest parking space to my house when I leave work in case there is a football match on and my street is blocked. Unfortunately I imagine it's illegal to fly drones with cameras above city streets. :(

This is happening in London although with ground based rather then air based sensors. http://www.westminster.gov.uk/services/transportandstreets/p...

I'm sure the government will allow consumer applications like self-driving cars to be rerouted around traffic jams, nearest parking spots. The same thing has already happened with GPS.