Schwarzenegger did have the appropriate class liscense to operate a motorcycle with sidecar. He just lacked an M1 endorsement to operate a motorcycle.
Half truths, a hallmark of the Schwarzenegger administration.
It sounds like Schwarzenegger's staff is the one spinning. When asked by the reporter, he didn't even try to justify it. You can listen to his statement at the press conference (transcribed below)
http://kfi640.com/timages/page/media/GOV_EXPLAINS.rm (Real Media Player)
Reporter:
I wanted to know about your motorcycle rides and no drivers license, Governor. Could you comment on that? Because today Senator Cedillo introduced the drivers license bill.
Schwarzenegger:
Very nice. [laughter]
Ummmm, I mean, err... I just never really... uh... got one.
[laughter]
Never thought about it. You know, I had one, like I say, when I was back in the military in Austria we had to take the drivers license for the motorcycle and for sidecars and cars and trucks and trucks with hangars and tanks... all of those things. And then I used that when I went to Germany... lived in Germany. And then when I came over here in the beginning I used that and, uh, I just never really, uh, applied for it. And it was just one of those things. I never thought about it.