how do you get the crates with the pig ghost on them?

I'm wondering the same thing. He mentioned something about wanting to hear sirens So I wrangled up a bunch of cop cars to chase me in the area close to the ghost but nothing happened. 

i tried that too but idk

Yeah im having this same problem. anyone figured it out yet? i assume its just an event that happens when i get enough jiggys.

Heh, I think it's kind of clever and amusing you guys tried getting cops to chase you. I got the impression that they were referring to like a mythological siren, like you see in God of War. I don't know, I'm still stumped here as well and am just assuming that I'll unlock something later that will let me get to these crates.

I have no idea either. I tried the police chasing thing, so at least it's not just me.

i think it might be the stop and swop items with the arcade game

"i think it might be the stop and swop items with the arcade game"

You need some special part for your cart that you earn from a Grunty Battle later in the game, I think.

"You need some special part for your cart that you earn from a Grunty Battle later in the game, I think."

Since the Stop and Swop was mentioned, how exactly does that work? Do I really have to pay 6000(!) notes to bottles to find out?

"Since the Stop and Swop was mentioned, how exactly does that work? Do I really have to pay 6000(!) notes to bottles to find out?"

*Possible Spoilers*

Did anyone come up with an inventive way to beat Grunty in that challenge? All my current planes and helicopters were no match, so I made the following...

"Did anyone come up with an inventive way to beat Grunty in that challenge? All my current planes and helicopters were no match, so I made the following...

A huge cage with an open bottom made of super poles, on top, foldy propellers and weapons that all faced into the cage, and at the back a few jets to go forward, and upward.

When the stage begins, I hit the jets, we launch off in her direction, as soon as we're on top, I fold out the big propellors and slam on full reverse, the cage slams down on top of grunty, she's going invisible on and off... then I let her have it. Missles, lasers, eggs the whole works firing at her. 

It was sick really, because she screams every time you would shoot her normally, now I had in her trapped in a cage and she was screaming non stop, until the BLING! noise of earning the Jiggy... hahaha

"