Almost all gasoline today is 10% ethanol, which over time pulls moisture out of the air and binds to the molecules in the tank. This water sits at the bottom of your tank and can make it difficult to burn. You can offset this by using dry gas, which will make the tank last about one year. If you do have ethanol-free gas near you (marinas often sell it) buy that instead. Ethanol becomes corrosive to internal parts after a while - I had a chain saw where the ethanol completely disintegrated the plastic fuel line. Most cars use metal fuel rails and rubber lines, so there's little danger of that in your car.
In addition to ethanol gasoline, your tires have a usable life expectancy of about ten years. Most folks wear their tires out before this, but tires should be replaced every ten years from when they were manufactured. If you garage the car, you might be able to get another couple of years out of them. You have to be careful with this because some tires are sold after they've sat around in a warehouse for years. Look for cracking, discoloration from ultraviolet (sun) damage, and hardening rubber.
Tires that aren't exercised regularly can also develop flat spots, and wear out much sooner if they're stored for long periods without moving, which is why some folks put their cars on block to store them. Blocks also avoid stressing the shocks and springs, which will wear out sooner if they aren't exercised.
You should change the oil once a year even if you're only going 3000 miles. Most oil changes can now be done after 10-15k miles, especially 100% synthetics.
You should also pay for a full lube job once a year.
