Scott Weiland In and OUT of Jail Already!

Rocker Scott Weiland checked himself in to the Van Nuys Municipal Court Lockup on Monday to begin serving his 8 day DUI sentence.

And, he was released THAT SAME DAY, PerezHilton.com has learned.

Scott went in at 8:55 A.M yesterday and at 6:54 P.M. he was let go – a free man.

You do the math!