THE U.S. POSTAL SERVICE
'(<a href="http://www.j-archive.com/media/2005-12-16_J_15.jpg" target="_blank">Kelly of the Clue Crew shows some video of mail trucks.</a>)  The United States Post Office has the USA's largest civilian motorized fleet: its workhorses are 140,000 LLVs, short for these vehicles expected to last 24 years each'
a long life vehicle