Waymo had promised to launch the first commercial service for self-driving cars within 2018, and while a service has been launched it isn't open to the general public just yet. It's called Waymo One, and it allows several hundred invited users to take a ride in one of Waymo's self-driving cars across a handful of suburbs in Phoenix, Arizona.

The World Endurance Championship, which includes the 24 Hours of Le Mans, will see its top LMP1 class replaced by a new hypercar class in the 2020/2021 season. The budgets are much cheaper than in LMP1 so hopefully new manufacturers will be keen to join. America's Scuderia Cameron Glickenhaus is already confirmed.

Chevy has revealed a second 2020 Silverado 2500HD variant. The latest is the High Country, which represents the range-topping trim for the full-size pickup truck. There will be five variants to choose from when sales start next summer.

You'll find these stories and more in today's car news, right here at Motor Authority.

Waymo self-driving service won't launch in 2018 as promised

Hypercar class rules for WEC, Le Mans have been finalized

2020 Chevy Silverado 2500HD High Country: More bling, less butch

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