What truck does USPS use?

Okay i bought somethings on Paramore.net and i bought it Friday at 10:38 and its been like wat 6 days and still hasn;t come i was wondering what truck they use and why it hasnt got here yet|||Why does it matter what truck it comes in? lolAnyway, not all packages have a guaranteed arrival date. Your package may be stuck in a processing facility or at your local post office. Just be patient. It will come eventually(or, if it doesn;t, you;ll know what;s happened to it at least). Did the site give a tracking number with your order? If so, head over to USPS.com and check.|||they drive jeeps lol