I love these sorts of collections of cards and similar things. The amount of design that goes into them and the different tech used is thrilling. I also love the retro design of the website (though I suspect that the owner is no longer a 9th grade student).
I'm personally a big fan of passports and other travel documents. Because of the official and international character of them, there are government run databases like PRADO  and EdisonTD  that let you see all the different features of each document.
I am disappointed to say I haven't seen a public database that covers driving licenses in such detail, but I'd love to know if anyone has seen one.