Jeff Walsh (kiwi) was doing the driving, I (American) was in the passenger seat pulling the clamshell latch at our APG VDA. We started at 50 mph and just kept upping the speed. We stopped at 120 mph as the rear started to get light. It is more dramatic if the clamshell is latch first and then open at speed (not recommended). Did the test severial times with no issues. Latches held up well.