Not sure if all of them are used to get persons across the US/mexican border, but ABC news has a little item (‘Fake FedEx trucks, when Drugs absolutely have to get there‘) on what they call ‘cloned vehicles’:

Savvy criminals are using some of the country’s most credible logos, including FedEx, Wal-Mart, DirecTV and the U.S. Border Patrol, to create fake trucks to smuggle drugs, money and illegal aliens across the border, according to a report by the Florida Department of Law Enforcement. Termed “cloned” vehicles, the report also warns that terrorists could use the same fake trucks to gain access to secure areas with hidden weapons.

The report says criminals have been able to easily obtain the necessary vinyl logo markings and signs for $6,000 or less. Authorities say “cosmetically cloned commercial vehicles are not illegal.”

A fake U.S. Border Patrol van was found to be carrying 31 illegal aliens in Casa Grande, Ariz. An alert agent recognized that the “H” in the van’s serial number is a letter used only on U.S. Border Patrol Jeep Wranglers. It should have been a “P.”

Unfortunately the photos provided with the article are of inferior quality so i wont display them here. Check out the fake fedex truck and the fake border patrol truck on the ABCnews website.