Potentially a huge market:

Google has long pitched self-driving cars as a way to cut down on traffic deaths (more than a million worldwide every year) and as a tool for those who cannot drive. It’s an altruistic spin on an industry whose potential value Boston Consulting Group pegs at $42 billion a year by 2025. 

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No matter the technology’s capability, the leap from the experimental phase to “everyone and everywhere” presents a list of labors to make Hercules shudder. Waymo needs to prove its self-driving system works in every situation, then get the public—and public officials—to accept that proof. Alphabet’s newest company must map every inch of every street it plans to travel, get that data onto its cars, and figure out how to keep those maps updated.