Lol, there is no pulling over because they don't usually have 'shoulders' on the sides of the roads and I don't recall them having any speed limits.
You just have to watch out for horses, goats and cows on the roads.
If you use your cellphone you get 'cloned'!
Beyond 25 miles in you do need your visa, AND insurance.
They weren't very smart to begin with.
Oh -
Americans need insurance in Mexico
Illegal caught in the USA driving without insurance are released
Hmmmmm.
I imagine the Mexicans are not that friendly if you don't have proof of insurance in Mexico -