I find it interesting to read the differences we have with regard to how we announciate a cars name or model. For me the Camaro Z28 was always (Zed) which I will add has a more muscular sounding resonance than simply Zee!
As well Datsun 240Z and its' future generations were always Zee.
I never heard a Datsun (speaking of defunct words), called a 240, 260 or 280 Zee.... Maybe Sault Ste. Marie Ontario pronounciation is influenced by it's other half of the city in Michigan.