To make the pork:
Place pork in slow cooker.
In bowl, whisk together marinade ingredients. Pour over pork.
Cook on low for 8 hours or high 3-4 hours, until pork shreds easily.
To make the veggies:
Combine vinegar, sugar, and salt, whisking until sugar is dissolved.
Add veggies and toss to combine.
Let sit for at least 30 minutes.
To make the sandwiches:
Shred the pork with two forks, keeping it in the liquid from the slow cooker.
Spread desired amount of mayo on each roll.
Top with pork, pickled veggies, and cilantro.
Enjoy!