Magnum's tunnels never had any mist in them. Magnum's last tunnel had (and occasionally still has) *smoke* in the form of a theatrical fog. For those of us who wear glasses, it's a better solution because it doesn't condense on the lenses, however, it's not the most pleasant stuff to breathe.
As for the folks who keep screaming about getting contacts: First of all, contact lenses are too high maintenance for my lifestyle, second, they offer little or no eye protection, which in my opinion is necessary on many coasters.
--Dave Althoff, Jr.