Hitchens is the guy who claimed the Viet Cong/NLF never used car bombs, right? Saddam was working with AQ all along? And lots of other bullshit? No, he was a disgrace, and that rag's association with him does not reflect well on them.
No, that's not what he claimed. He claimed they didn't use car bombs "on American or any other foreign soil," which doesn't negate the use of such bombs on Vietnamese soil.
I don't have strong feelings for or against Hitchens, by the way.