Since taking office in 2014, Paris mayor Anne Hidalgo has been on a quest of sorts to make the City of Light greener, and she’s been doing so by encouraging urban gardening, converting a riverside expressway into a pedestrian-only walkway, and more. Now, she’s given the green light for Sea Bubble, an egg-shaped zero-emission vehicle that would float down the Seine shuttling passengers across the city—all while avoidingParis’s serious traffic problems.
The Sea Bubble is the invention of French yacht-enthusiast Alain Thébault and Swedish windsurfer Anders Bringdal, and is set to begin trials along the Seine in the spring of 2017.
Here’s how it works. The Sea Bubble, with seating for five people, is built with lightweight components made of fiberglass and high-density foam, along with four foils attached to the hulls to reduce any drag, allowing the vehicle to float two feet above the water while in motion. It’s powered by solar energy, and can reach speeds up to 18.5 miles per hour (30 km/h).