Wow, I thought I was the only one using this... This is just temporary untill I get this (No garage):
2009 Nissan 370Z Covercraft Noah Car Cover
@molamann - the wal-mart cover is pretty good... no complaints so far. only con would be the material itself. its thin, so protection against hail, acorns, etc., is pretty slim. highly recommended if you garage your car though.