Amercians are crossing the border to Mexico in desperation of gas prices.

Now this is desperation and economy that might go backwards! Americans are crossing the border in California to get away from the almost $5.00 / gallon gas and get $2.60 / gallon gas.
See this video from Rueters.com:

http://www.reuters.com/resources/flash/includevideo.swf?edition=US&videoId=84989

Mexico subsidizes its fuel and thereby, much cheaper than the States.

Consumer can also learn how to burn fuel more efficiently and essentially double the gas mileage at http://offto.net/waterplusgas . It would be as if buying gas at $2.00 / gallon instead of $5 or $4 / gallon.