mexican toll road expenses?

Getting back to the OP's original question, a motorhome towing an automobile is charged TWO times at each toll gate. One time a higher rate for the MH, and the second toll is for the car just like if you were driving it. A three axle motorhome trailer towing a motor vehicle is due to see some interesting toll rates. One time on the autopista between Valladolid and Merida, one single toll amounted to over fifty dollars pesos conversion rate. Tolls are a gold mine. The concessionaires are rich. They bribe government officials. The government goes in and makes outlandish promises to landowners (usually poorer Mexicans) then grabs the land under eminent domain. Little if any money is ever paid and the fat cats just keep raising rates.