Obama’s limo will be a Caddy like no other: This article on the new limousine apparently under development for President Obama includes this astonishing tidbit (emphasis mine):
[…] television clips showing Bush entering and exiting the rear doors of his limos indicate that the windows are at least 5 inches thick, almost twice the depth of what was used on presidential limousines in the 1980s and ’90s.
While I do not know what type of weapons such thick windows are designed to guard against, a half-inch of transparent armor is enough to stop a .44 Magnum round at point-blank range; at a thickness of 1 1/4 to 1 1/2 inches, the same material can withstand higher-velocity bullets fired from military assault rifles.
It’s apparently a Cadillac in name only. The author’s best guess is that it’s a custom body on top of a GM 2500 truck frame.