If self-driving cars are a huge success as a technology, it won't be from Google. Google is incredibly bad at developing things where humans need to be involved. (See also: Try to get customer service for most Google products.)

Google has basically glossed over the fact that their cars fail every 1,560 miles and focused on their "1.4 million miles driven" figure. They're pushing an agenda of eliminating the human driver from their prototypes, even though their cars would be incredibly dangerous without them.

Meanwhile, other companies are focusing on ways to make the UX of self-driving cars safe and comforting for humans to interact with: http://www.fastcodesign.com/3054330/innovation-by-design/the...