He has written extensively about road trips, including detailed accounts of the failings of the vehicles, interactions with the people he travels with and those he meets.
In the early 1980s, Egan wrote a freelance article about a motorcycling trip with his wife, which he submitted to Cycle World.
While writing for Cycle World, Egan also wrote for the automotive magazine Road & Track, part of the same organization, and had its headquarters in the same building in Newport Beach.
His writing style fit well with, and may have been influenced by, those of his contemporaries at Road & Track, including Henry N. Manney III, Rob Walker, Innes Ireland, and Dennis Simanaitis.
Egan has since retired from the regular staff of both magazines, although he still contributes monthly columns to both and also writes features as an editor-at-large.