The two smugglers had been traveling at a high rate of speed when they lost control and crashed the drug-rigged car somewhere near the town of San Fernando, in Tamaulipas, Mexico. They had initially survived the accident but later died at the hospital from the sustained injuries. Apparently, just the driver airbag deployed in the crash, since all the others had been replaced with standard cocaine bricks.
The good news is that police got hold of 55 pounds of blow that could have ended on the street. The bad news is that it's probably just a tiny drop in an ocean, not to mention that they have nobody else to prosecute for the crime. Thankfully, the accident didn't claim the lives of other innocent victims, although it's not yet clear if the car crashed into another or if it was the only vehicle involved.
While the thought of stashing drugs inside airbag compartments may have sounded like a genius idea, in theory, in practice it's pretty obvious that there is simply no safe way of doing an illegal drug run. You will either get caught by police or crash from the stress most of the times, so it's probably best to keep it legal. In other words, this just serves as yet another reminder that drugs are bad for you, and you shouldn't have any affiliation with them.