2011 would be a good year for Doctor Emmett Brown's DeLorean to break down. He can just call up his local O'Reilly and see if it has part numbers "121G" and "121GMF" in stock.
The flux capacitor product listing includes a warning as to the dangers of time travel. Unfortunately, O'Reilly doesn't carry plutonium. You will have to contact your local supplier.
The Mr. Fusion Home Energy Reactor Generator is a highly recommended upgrade. It replaces that pesky plutonium and generates 1.21 gigawatts of power to supply the flux capacitor.
The parts aren't currently available online. My local O'Reilly doesn't seem to stock them, either. I'm not sure how they expect me to turn my Prius into a time machine if I can't get the right parts.
There is a buzzkill "entertainment purposes only" disclaimer in bold print at the bottom of each O'Reilly product listing, but I'm just going to ignore that and continue to live in my geeky fantasy world where "Back to the Future" is a documentary.
(Via Geeky Gadgets)