Mr Nissan's hand is rather strengthened when he can show the UDRP panel he won a similar case in a US court of law, which might take the wind out the sails on the Nissan Motors side. For what its worth, the WIPO databases show plenty of other UDRP claims from Nissan Motors.
> I'm not sure what you mean by "can't typically be trademarked".
I mean exactly that - under most trademark law systems, you cant typically trademark a family name. I say typically because like everything there are exceptions.
If Nissan Motors believed they could win via UDRP, why haven't they?