Yah, my registration for the Proton says Ironman. The county also lists it as Ironman for property tax (of course they get their info from DMV so I rekin that makes sense).
Back in my Suzuki Samurai days - it was registered as a Station Wagon. Go figger. I guess they just didn't have a category for a micro-mini-SUV.
BTW - You can NOT get them to change it.