Identify the part of speech illustrated by the boldfaced word in the following sentences. In 1959, Chevrolet proudly introduced its most radical car of that time, the Corvair. In 1959, Chevrolet proudly introduced its most radical car of that time, the Corvair. Wow! The Corvair was air-conditioned, rear-engined, and tiny. Wow! The Corvair was air-conditioned, rear-engined, and tiny.