You need to be more concerned with the white Tsuru saloons. They cruise the streets checking out innocent civilians at the side of the roads, often slowing right down to get a good look at their potential victim.
They pick up seemingly random people from the side of the road, then disappear with them into the traffic at high speed.
No one knows how long the people are held, but it's a common sight to see pale and shaken men, women and children getting dropped at the side of the road. They can even be seen paying for their freedom directly to the driver. These criminals have no shame!
It's a huge business in Mexico. Clearly the government is doing nothing about it, in fact, some of the more enterprising criminals actually use white mini-buses so they can pack more people in. They often leave the windows open a little and the look of misery on the captive's faces would break your heart.