They've now added to the story that the speedometer was stuck at 60mph! The driver is claiming he thought they were on the nearby (a couple of blocks away) highway.
I think you've got it backwards though. They haven't bothered to change it because it wasn't in need of change. The old adage "If it ain't broke, don't fix it." applies here about as well as anywhere.
I'm going to have to disagree with you on this one. I got behind one of these one evening and not only did my modded Turbo II not have anything for it, the sounds coming out of that machine were downright otherworldly! Sometimes it's fun to be outclassed!