This would have been #1 sickest film IF [spoilers]
If there was more baby action. I was expecting him to add the young black boy into the centipede, or somehow the pregnant woman gives birth and he attaches the newborn to the end of the line.
Sure, giving birth and squishing the kid with the gas pedal is pretty bad (I let out some sort of audible when it happened) but that sh*t-covered conga line needed a baby!