Mi - Progressive - I have a cannabis risk in Minnesota. I a

I have a cannabis risk in Minnesota. I am getting the gl and coverages with an E&S market but it's wholesale and they will be transporting it. They sent me info that they need a surety bond or cargo coverage for $300,000. Who would write this? Also they are not gonna leave the state so they did not get a DOT. I quote the auto liability and physical damage with progressive but they will not do the cargo obviously.