Anything is possible. Before Magnum was ever conceived by designers, just think about how many people might have thought of a giant coaster. Others would have laughed in their face making fun of them. It did happen. Just as Millennium Force stormed through and broke the 300 foot mark. I can almost certainly promise you something bigger will show up. I never doubt anything. Ideas pop up everywhere, just be on the lookout for the first of its generation. I am very adament about the arrival of newer designs.
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Shawn Bailes
Webmaster of Coasters R Us
http://coastersrus.home-page.org