Fewer Americans are biking to work, new data shows, but the bigger question is why some cities are seeing so much more progress than others.
The reported criminal probe is likely in its early stages, but darkens an already gloomy sky gathering over Elon Musk's automaker.
Most cities felt powerless to extract concessions from Uber and Lyft. Now that scooters are here, they've learned their lesson—and toughened up.
Traffic analytics company Inrix looked at freight and safety data to consider where robo-trucks could make the biggest impact.
Plus: flying cars get hooked up, BMW and Mercedes show off new concepts, and Waze makes Chicago more navigable.