Apollo joined fellow supercar startup Scuderia Cameron Glickenhaus; Audi announced its withdrawal from the World Endurance Championship; and Fisker gave us our first look at the aggressive face of its new electric car. It's the Week in Reverse, right here on Motor Authority.

The Apollo Arrow supercar that we saw at the 2016 Geneva auto show will be developed using technology borrowed from Scuderia Cameron Glickenhaus’ SCG003. The move will help spread the costs of developing the technology, which is crucial when you consider the low volumes of the respective models.

We were saddened to learn this week that Audi will be withdrawing from the World Endurance Championship at the end of the 2016 season. It also means the brand with the four rings will no longer be at the 24 Hours of Le Mans, which it has dominated over the past two decades. Audi’s motorsport future lies in the Formula E electric car series.

Speaking of electric cars, the rebooted Fisker released a teaser photo revealing the aggressive face of its upcoming electric car to take on the Tesla [NSDQ:TSLA] Model S. Interestingly, the design is not unlike what Fisker design boss and founder Henrik Fisker introduced on the Dodge Viper-based Force 1 supercar he presented at the 2016 Detroit auto show.

Mercedes-AMG this week revealed its new E63. The super sedan was revealed in both standard and more potent S guises. The latter delivers a supercar-like 603 horsepower and 627 pound-feet of torque. That’s enough to rocket the car from 0-60 mph in just 3.3 seconds.

The other big announcement from Mercedes this week was the reveal of its new X-Class. The X-Class is the automaker’s new pickup truck, which at the moment is still a concept. The production version arrives in 2017, though sadly not in the United States.