CrowdSourcing the Self-Driving Car

NYTimes had an article on the problems of creating the very detailed map needed by self-driving cars, which led to descriptions of the use of crowdsourcing to solve the problem.  

The idea is simple: have the equipment in each self-driving car update the imagery in the database that guides all self-driving cars.  To me it's a similar idea to my bottom-up car, or trainable car: the data from traversing a route at time A is available to be used to help traverse the same route at time B.