Mobile, sun-seeking gardens, and more in the week that was

The Fisker Karma was one of the world's hottest plug-in hybrid supercars when it debuted in 2011 - and now its creator Henrik Fisker has announced plans to launch an electric sports car with a 400-mile range next year. Meanwhile, Mercedes is taking aim at the Tesla Model X with its new Generation EQ SUV, which touts 400 horsepower and an all-electric driving range of 300 miles. The International Space Station is getting ready to test a brand new ion thruster that can be powered by space junk, and teenage inventor Boyan Slat has modified a C-130 Hercules aircraft with high-tech sensors to spot plastic debris in the Great Pacific Garbage Patch. Solar power is getting cheaper by the day - and two groundbreaking projects in China and Abu Dhabi have pushed the price down 25% in just five months. In other energy news, Poland just unveiled a glowing, bright blue bike lane that's charged by the sun.