Around the time of Magnum was when 3D models probably realy took off for a coaster co. Think about it...Disney Coaster came out in 85 if I'm not mistaken, it technicaly was a 3D coaster game. Pretty sucktacular by todays standards but back then, it was awsome, and probably used by some companys to show roughly how a coaster would act. They more than likely used primative CAD programs though.
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We bought a lifetime supply of pudding? How wasted were we last night?!
*Dude, Where's my car?*