Check this out

Video: Drug cartels build narco-tanks

Wow. You don't really realise how big a business it is until you read about things like that and these trucks.

Recently I've read an article about the submarines, they are buildung, too.

These 'tanks' are indicative of how brazen Mexican cartels have become over the past decade - it shows how the profits gained from seizing a rival's territory by force is a higher priority than concerns about how the government would respond.

Here's a video of what Mexican cartels typically roll around in: new, often uparmored Ford and GM pickups and SUVs filled with gunmen and even mounted weapons.

http://www.youtube.com/watch?v=VhxSIqopHbU