It's aircraft related...
It was quite a fun ride really, you use the ailerons / wings to pivot your "aircraft" on it's axis. It doesn't go fast enough to spin you around by simply sliptting the ailerons, so you rock them back and forth and after a few tries you can spin it around. Aircraft at the front of the pack get better airflow so they spin around much faster. If you are old, choose one at the rear
PS: This is at Dreamworld.
This concept of you controlling it yourself made me realise that you could set up a similar scenario, eg a Starwars type fighter on a rollercoaster and using the wind generated by the speed, you could have it control your "ship" with ailerons and go all the way around plus tilt back and forth. A far more interactive rollercoaster than would be the norm.