How hard will it be to map the streets for self-driving cars?

Here is a very good point:

…the importance of maps to the self-driving market is another reason that car companies may struggle to remain market leaders as the industry shifts to fully autonomous technologies. Google, Apple, and Uber have a lot of experience collecting, analyzing, and distributing vast quantities of fast-changing geographic data. Ford, GM, and Toyota don’t.

The rest of the analysis by Timothy B. Lee is interesting as well.