Polygon: Autonomous cars have been around for years, but are they safe?

Autonomous car technology has been around since the mid-1990s, and it's been a popular topic of discussion among car manufacturers.But while cars have changed over the years, they've also improved in some important ways.We take a look at how many of these changes have been made since the 1990s, as well as some of the most important changes.1.Automatic Double DoorsAutomatically opening doors on the...