If you have been meaning to grab some stuff for your car this is a GREAT deal.
Right now when you shop through the Advance Auto Parts website [1] you can get $40 off when you spend $100 or more.
Plus you can have your order shipped to store, so shipping is FREE (or if you spend $75 or more shipping is free anyway).
I see two codes that work: DOW19 and TRT41.
These codes should work through 5/11/13 but they can always pull them early.