Porsche's new 911 Turbo S is the latest recipient of the automaker's active aerodynamics system. A new video is out detailing how the system primes the car for every driving situation.

A prototype for the next-generation BMW M4 has been spotted. The new car will come with the choice of manual and automatic transmissions, rear- and all-wheel drive, and striking looks previewed by last year's controversial Concept 4 show car.

Another upcoming car that has been spotted is a new Volkswagen Arteon R. The speedy fastback sedan is expected to boast a new turbocharged V-6 with over 400 horsepower on tap.

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

Get a close-up look at the 2021 Porsche 911 Turbo S active aero in action

2021 BMW M4 spy shots

2021 Volkswagen Arteon R spy shots

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