You might see a cute, driverless bus roaming the streets of Washington DC starting today. It's called Olli, and it's an autonomous electric minibus designed by Local Motors, which you might remember as the company that's planning to sell 3D-printed cars this year. While the automaker itself designed the 12-seater's self-driving system, it teamed up with IBM to use Watson's capabilities to power the EV's other features. Thanks to Watson, you can tell Olli where you're heading in natural language ("I'd like to go to [workplace.]") and ask it questions about how the technology works. Best of all, it won't kick you out even if you keep asking "Are we there yet?"