==Exit numbers== 
 Does anyone know what is the deal with the exit numbers in Livingston?  I have seen them first hand, so it's not a glitch of google maps.  Now getting past the random nature of having exit numbers in Livingston but not in Houston, the numbers themselves do not make sense.  The are numbered increasing as you go south and they can't be mileage based, it is not that far from the northern end, its not even that far from Laredo.