I’ve just found an entry on PubMed for a curious sounding case study:
An unusual perversion: the desire to be injured by an automobile operated by a woman.
American Journal of Psychiatry. 1960 May;116:1032.
KEELER MH.
I imagine it caused havoc during rush hour.
Unfortunately, the paper doesn’t have a summary, and I’m not able to access back issues of the AJP at the moment, so it will have to remain a mystery for the time being.
Link to PubMed entry.
Mind Hacks 
J.G. Ballard’s novel Crash was published in 1973. Maybe he had come across that 1960 journal article and it inspired him.