That's not turbulence, it's a line of hungry customers.

https://i.imgur.com/7wddwD7.png

Fuel up your customers with the Engine Counter in Restaurant Story!

ugh, yuck, it reminds me of that one brand of tires that have a yellow and black logo, can't remember the name.

...
I definitely won't be buying this...
Not unless it's apart of a goal, then I'd sell them.