Will my order get here today?

I ordered a PS3 Black Ops bundle last Friday, and it just shipped today. I live south of Chicago, and the PS3 just went into transit around 1:05PM. It's now 6:18PM. The PS3 is shipping from a city in Indiana, only 3 hours away, and Amazon did say the order would be here by tomorrow. How late CAN deliveries usually deliver? Do they stop around 7-8PM? Do you think that there's a possibility that the order will get here by a later time, today? Will I ever stop asking questions? Naw, just kiddin. No, but seriously.