This is "Turbo-Drachen", a unique rollercoaster at Potts Parks (Germany) build by abc rides.
abc rides calls it Dynamic Swing Glider, but I would call it powered-suspended-swinging coaster.
Also you can choose your own speed. On the left you have a small lever. If you press it to the front the car goes faster, if you pull it to the back you´ll slow down.
It´s a lot of fun for the whole family!https://www.youtube.com/watch?v=2rQWbGHpaQM