The truck security card already exists! It's called an MSIC. Only works if you go in and out of sea ports though. Also, it's $290 not $500
Ah Pilotchute I forgot about the MSICs. They caused a great deal of amusement up our way when all the 'working girls' that meet the ships to comfort lonely sailors were forced to carry and display MSICs. There are a fair few of them so obviously bulk buying of MSICs reduces their price.
