The term is actually descended from War Games, so his usage is correct.
It goes like this:
War Games, released 1983 >
War Dialing, coined about 1 day after the movie was released >
War Driving, coined sometime after 2000, unclear exactly when.
For those of you who were newbies in 1983:
http://neil.franklin.ch/Usenet/alt.a...ling_etymology
And a quick quote from that usenet post regarding "War Dialer":
More common terms are (or were) demon dialer and auto-redial, both of which first appeared in November 1982, according to Google. Of course the technique is far older than that.