Obviously they opened the bonnet to check before the dyno, and when I drove it out again, I never noticed they'd only just laid it back down and not shut it properly (probably shouldn't have been staring at all the far sexier skylines and paying attention ahead instead).
So I hit the ramp onto the gateway, hit 100 and just see my bonnet start wobbling like crazy (it seems that 100 is the magic number for getting it to do that, doing 60-70 all the way up sandgate road and it just sat there and didn't move).
I was just like... oh shit... the first exit wasn't for at least a couple of k's down the road, those where some "fun" k's.