Geico actually offers an extended warranty for 100,000 mi. You need to be the original owner and you have to sign up by 15 months of owning the car or 15,000 miles. See this thread:
http://www.m3post.com/forums/showthread.php?t=658774
I am thinking of getting this as well; but I am waiting for 15 mo or 15,000 mi...