On line permits with visual instructions
This page on a Mexico RV Caravan site has the procedure for obtaining permits on line, with pictures, for both RV's & cars/truck. The example is a Truck Camper which is a gray area and a Lexus SUV. ...
Forum Discussion
You have to pay for your FMM at a banercito, HOWEVER, you have until the expiration date of it to do that, and you can do it anywhere in Mexico.
