WHile it sounds like you might be out of luck - you might have laws depending on where you live - your state might protect you.
Products don't have to be registered in CA to have the warranty, it's a law in the state.
It's worth calling - call a store and ask about Apple Care and you will get transfered to them.
The Magnuson-Moss Act (which covers consumer warranties, guarantees, etc.) provides consumer protects that do not require one to register a warranty to receive the benefits. Essentially, the law states that if you purchased a product from the manufacturer or their representatives and that manufacturer offers a warranty or guarantee of some sort, you automatically receive those benefits upon purchase.
However, it is up to you to provide proof of purchase to receive protection under the M-MA.
As far as I know this only covers the original warranty offered with the product, not extended warranties.
So when you see that little card in the package that says you have to return it to the manufacturer, you can toss it - as long as you hang on to your sales receipt. If you read it closely, you'll probably find a disclaimer stating that you don't have to send it in to receive warranty benefits. Most of the time the cards are just a ploy to gather marketing information.
Some states have laws that modify the M-MA, so be an informed consumer and check them out. For example, AppleCare cannot be sold for a consumer product in Florida. Why? Because it's considered a form of insurance, and Apple is not licensed to sell insurance in Florida.
Yeah, it sounds stupid, but Florida is not the only state. Interestingly enough, Apple will still sell and ship to Florida through the Apple Store online, but if you do it over the phone or in an Apple (retail) Store in Florida, they won't. At least they didn't used to.
MD