This is just a common problem, I don’t think that you need to feel awkward or anything like that. Like, I have a small problem of losing my watches……I just don’t understand where I loose them! But, anyways, as a solution to your problem, I would suggest the use of Car Spotter which is an easy-to-use vehicle locator that uses the iPhone's navigational GPS system. It is a great application especially for you as your problem will be totally solved and you would like its other features too.