I just received notification from ECTA [East Coast Timing Association] that they have certified the TigerCage for competition up to 175 mph.
http://www.ridetech.com/store/tigercage/
ECTA runs the standing mile event in Maxton, NC a few times a year including the Hot Rod Magazine Top Speed Challenge
http://www.ecta-lsr.com/?page_id=69
Joe Timney is the President of ECTA. He also owns Deleware Chassis Works and builds many top speed style vehicles for MAxton and Bonneville.
Keith Turk is the competition director for ECTA. Some of you have met Keith on Hot Rod's Drag Week over the years...He and his wife Tonya run the event there as well.
Both of these guys were instrumental in wading through the details that have allowed ECTA to grant us certification at this level.
SCCA and SFI are next!