IndyCar officially launched the 2018 car with the Universal Aero Kit, at the North American International Auto Show. A series-wide open test is scheduled for Feb. 9-10 at Phoenix. Teams can test until shortly before the 2018 season opener, the Firestone Grand Prix of St. Petersburg on March 11.
http://www.indycar.com/News/2018/01/...-unveil-follow