This text was not translated, because it is originally in English Two of the most popular concepts at the Detroit auto show, the Nissan IDx Freeflow and Nismo concepts, are making the rounds in Southern California, and their first stop is none other than Motor Trend headquarters. Check out photos from their visit and find out where they're headed next here. Two of the most popular concepts at the Detroit auto show are making the rounds in Southern California, and their first stop is none other than Motor Trend headquarters. The Nissan IDx Freeflow and IDx Nismo concepts were transported to Sunny SoCal straight from the Detroit show, which officially ended this past Sunday. As many editors professed during the show, we fell in love with both cars the moment they took the stage for their North American debut -- and we love them even more seeing them out in the daylight.