The tech industry is starting to ask a crucial follow-up question about driverless cars

Driverless cars are no longer a question of "if" or even "when?" Instead, the tech industry is starting to ask a crucial follow-up question: How? I spent a couple days last week at Code/Mobile, a conference for tech executives, and not a single person I saw, either on stage or in private conversation, doubted the rise of autonomous cars. Google's cute, mini Koala-like car is perhaps the most visible prototype of the future. But there are at least 25 other companies also working on driverless tec...