Wow. I think that was the fastest delivery of a credit card I've heard of! Congratulations on the new Cap 1.
A similar thing happened to me for both Cap1 cards I got this year. Applied for both a Platinum and QS1 on a Thursday. Got both cards the following Tuesday. The card shipped notification came the next day for both as well. The QS1 back in May. The Plat in mid November. I'm in Texas. Very quick turn around I must say!