The aircraft, known as Solar Impulse 2, is the only solar-powered aircraft in the world that can fly day and night with a pilot on board. It’s covered in 17,248 solar cells to power four electric motors and propellers. Solar Impulse 2 is currently on the seventh leg of its voyage around the world, demonstrating that today’s lightweight, durable and energy-efficient polyurethane technologies can be harnessed to achieve new milestones and set new records.