UPDATE: After the comments posted below, my colleague Adam was able to confrim that this is, indeed, an elaborate hoax. Full explanation is here. Sorry for the confusion, but I will note that the original PI entry, other than posting a fantastic and unbelievable tale, did not make it easy to immediately assume this was a fake.
I just found this 4-part series in a PI reader blog. The original author, Jessica Atwater, evidently “ghost wrote” Tom Wolfe’s Electric Kool-Aid Acid Tests and organized Jack Kerouac’s notes to publish On The Road. From the introduction:
In 1968 [Jessica Atwater] was approached by “Mother Nature News,” a popular counterculture magazine at the time, to report on the production of a low-budget “biker film” being directed by a little known director. She spent two months with the cast and crew and out of that experience came this article.
Read the whole thing here