Brian NaylorNPR News' Brian Naylor is a correspondent on the Washington Desk.
A Volkswagen Passat is tested for exhaust emissions, at a Ministry of Transport testing station in London. In the U.S., a 1998 copyright law prevents safety researchers from accessing the software that runs cars.
John Stillwell/PA Photos/Landov
Tom Gorner, founder of Skyscape Services, flies his drone in the backyard of his Virginia home. His company uses the drone to photograph real estate for prospective buyers.