For David Estrada, the lightbulb moment came years ago while he worked as a member of Google's self-driving car project.
In an event met with much fanfare, the company showcased how a visually impaired man could use a self-driving car to conduct a series of daily errands he'd otherwise be unable to complete.
For Google and others, the feat promised future independence for millions who have physical restrictions.
Estrada, now the chief legal and policy officer at Nuro, emerged with a different takeaway.
"What we envision as the purpose for a self-driving car is taking someone to conduct errands," he said.
"The question is, is that really how we should be using our time? Would it be safer for everyone, including ourselves, if instead of hopping in the car and racing across town to run errands, we have an autonomous vehicle do much of that for us?"