I haven't received word at any of my orientations that the ride was gonna be a 300 footer and with the stringent height laws that Williamsburg has on top of the Kingsmill residents complaining about height and noise (except me of course), I highly doubt any of this is legit anyway (at least until more info is released).
90 degree upward launch (from the ground) is definitely possible... Look at TTD/Hypersonic.
For a 90 degree launch (space shuttle style) look at Volcano... Granted Volcano is already traveling at a high speed when it hits the vertical launch, but it's still a vertical launch nevertheless.
Mach Tower opens around May!



