Carbonic is a depiction of a speedster-like sports car.
From the back of the 2014 card:
Born: 2013
Birthplace: El Segundo, CA USA
Designer: Hot Wheels®
Specialty: Open roadster with a rear-mounted, turbo charged, 4-cylinder compact engine and gobs of carbon fiber. Sleek, light and powerful, it excels both on and off road and was built for winning.