There's several different ways to access the supercar driving accounts:
The Shadowfast supercar driver logs (my personal favorite account portal)
OR
American road warrior
OR
Index of Shadow's supercar feats, deeds, and exploits
Other such pages include Ultimate road trips, One Mustang owner's wild rides, Ford Mustang versus the world: Personal stories, tales, adventures, and accounts inspired by actual events, Romance on the run: Love stories for hot rodders, street racers, and car aficionados, and Shadow of a Mustang The impact of one particular pony car upon the world.
The Shadowfast super car project:
Notes on the creation of possibly the ultimate Mustang Mach One of the 20th century
Notes from the actual owner/driver of the Shadowfast super car
Selected excerpts from correspondence between site visitors and the driver/owner/builder of the original Shadowfast Mustang supercar
A Shadowfast supercar for the 21st century
Supercars: The legends, history, creators, specifications, and more; PLUS, how to build your own!