A number of designs and styles have been produced by Radio Flyer, often inspired by the automobiles or popular culture of the day. The "Zephyr", produced in the 1930s, paid homage to the Chrysler Airflow. The 1950s saw a yellow wagon inspired by the movie "Davy Crockett, King of the Wild Frontier" and a blue wagon produced in partnership with Disney's "Mickey Mouse Club". Wagons from the 1970s borrowed the stylings of the muscle cars of the day, including the "Fireball 2001" inspired by Evel Knievel. The 1990s saw the introduction of the "Quad Shock Wagon" echoing sport utility vehicles. The "Ultimate Family Wagon", introduced in 2007, includes a sunshade and an adjustable seat; the design won a Chicago Innovation Award in 2007.