DESCRIPTION: It is called "e-volo," was invented by three German budding genii, and takes off like a helicopter ... This electric multi-copter with 16 propellers flew for the first time in late October last year. In 2 years time, a two-seat version of this prototype should be on the market. Cruising speed : 150 km / h, altitude : 2,000 metres, price : more than 100,000 euros ...