Steven Portenga is a retired NASCAR driver. He spent more than 2 decades racing in various national and regional support series to NASCAR Sprint Cup Series, and he won the NASCAR Featherlite Southwest Tour championship for late models in 1994 and 1998. Portenga and his wife, Windi, are now car owners of the #21 & #31 cars in the NASCAR K&N Pro Series West, where he's also the crew chief for one of those drivers, Alex Schutte.