Minion Rush level 493: more Gru's Rocket madness

As you can see, I failed in trying performing the glitch from special video 23. About 5,000 meters (metres) into your run (about 5:00 minutes), the obstacle patterns get a little tricker, so it's okay to collect the Minion Shield (or the invincibility shield) and the Freeze Ray. I was surprised when I didn't collect Gru's Rocket in the red zone. Why was the collectible lifted so high? (So is The Volcano the imprisoned minions' hideout? It seems like more of them are found here than anywhere else. Now we know where to chase them down!)