Jason Momoa converted his Rolls-Royce to electric power, two R34 Nissan GT-Rs surfaced for sale in the U.S., and the 2025 Porsche 911 Targa underwent cold-weather testing. It’s the Week in Reverse, right here at Motor Authority. Actor and car enthusiast Jason Momoa had his 1929 Rolls-Royce Phantom converted to be an electric vehicle. The work was…