What was the location of the swing set where you did this stunt? It took me at least a dozen tries before I managed to obtain the "Rolled Over" achievement at the South Slopes swing set as there isn't much of a run-up. Most of the time the car ended up looking as if it had been through a car crusher.
Haha Nice! I always end up playing around with the swing set glitch when I get pretty bored and it is highly funny although for me instead of the car flying meters away, Niko ends up flying out the car and landing pretty far away from the swing set .
This post has been edited by GtaOutKast on Monday, Jun 18 2012, 12:52
Sorry to revive this thread but I kind of forgot about this post and wanted to reply back. I did this in Multiplayer Party Mode. To get to this swingset, take the helicopter and head towards the bottom of the left island. You will see a tall apartment building and the swingset is right in front. I agree that this doesn't take much skill and it was all luck. lol. No way of knowing the movements of the boats or even if I would land in the water. Finally, certain cars work better than others for this glitch. I prefer trucks, or the Supercars like the Coquette, Infernus or Turismo. Try Crashing the Helicopter into the swingset. Have fun with it!