All tunnels under construction were test.
Mayor of Chicago Ram Emanuel gave permission to the company Ilona Mask to build a high-speed section of an underground highway that connects the business center of the city with O’Hare Airport. Passengers will be transported on mobile platforms (Electric skates) on the basis of the chassis of the off-road vehicle Tesla Model X. One-way trip will take 20 minutes, and passengers will be sent every 30 seconds. Buses of the new Chicago Express Loop will move at a speed of 200-240 km / h and are equipped with a climate control system, luggage storage and Wi-Fi.