FLORENCE -- NASCAR Hall of Famer and four-time Indy 500 starter Cale Yarborough signed a Stinger Thursday morning.

The 2011 Indy concept show car was developed by veteran driver John Andretti, Andretti Autosport and Window World to honor the 100th anniversary of the Indy 500.

Yarborough was the 189th former Indy 500 starter to sign the car.

The car is yellow and black and includes a fully chromed engine with gold wheels.

Officials expect 273 drivers to sign the car.

A donation of $189 will be made to Window World Cares to support causes such as St. Jude Children's Research Hospital and Veterans Airlift Command.

Yarborough says he didn't mind signing the car because he's always willing to help children.