Question about turning in active 10 year permit?

Thanks for the info. I was just reading on a Mexico insurance site that 1 driver can now get permits for both the RV and the tow car. Is that true? We thought the rule was 1 vehicle permit per person, so In the past my wife would get the tow car permit, and I would get the 10 year RV one. But if she can now get both, that would solve our problem.