We aren't sure what that term means. Here's a link to the company we bought our ins from this year.
Mexico Car Insurance from Mexpro.com
Your US insurance does not apply to anything in Mexico. We spend 5 months here so we cancell our US insurance for that period.
Where are you going in Mexico? We are in Zihuatanejo, which is about halfway between Puerto Vallarta and Acuapulco.
let us know if we can help with other info.