Can't decide between style, luxury, and performance? Check out the Audi S7. It's a sportier version of the elegant A7 Sportback, which combines a spacious cargo area with a sedan-like cabin.

The Audi A7 wasn't the first coupe-like four-door, but it's one of the best. This sleek hatchback debuted in 2010, and the current second-generation A7 went on sale for the 2019 model year.

Researchers have developed new contact lenses that enable vision in the near-infrared range, and they could restore color perception to people with color blindness.