French Engineers want to solve congestion with electric hydrofoils. This is the Bubble from French startup Seabubbles. Seabubbles slogan is "let's make our cities flow again". SeaBubbles calls this an on demand urban mobility system.

The Bubble is powered by two electric motors that use hydrodynamic lift to push the hull above the water. It can travel up to 17 miles per hour. A bubble is about the size of car and can fit up to four passengers. The bubble charges at docking stations that would be powered by 100% renewable energy.

Seabubble has already tested its taxi in Paris and Geneva and is planning an autonomous bubble for next year. The company's plan is to reach 50 cities by 2023.