Creative Tehnologie. Citroen. The Citroën C4 is a small family car produced by French automaker Citroën since autumn 2004. A revised version with new front end and dashboard revisions was launched for the 2008/09 model year.The car's advanced technology was the focus of a well-known television advertising campaign showing the car transforming into a giant dancing robot. The follow-up ad features a similar transformer robot ice-skating at high speed across a frozen lake, dodging around obstacles and executing a hockey stop in front of a group of engineers before transforming back into a car.