Whibbs worked for the Pontiac division of General Motors beginning in 1940. He held positions in Buffalo, New York, Charlotte, North Carolina, Jacksonville, Florida, and Pensacola, Florida.
Whibbs' career at the Pontiac division of General Motors spanned from 1940 until the end of the decade, with his work locations including Buffalo, New York; Charlotte, North Carolina; Jacksonville, Florida; and Pensacola, Florida.