This is a DIY project that is definitely not for the weak hearted. After all, it might even make you look suspicious in the eyes of the law, considering how your car key has been melded into a screwdriver, making it look at first glance as though you were using the screwdriver itself to start the car! Sounds impossible, but that is what it looks like. This DIY project would require you to find an old screwdriver with a shaft about the same thickness as the width of your car key, and some practical metalworks knowledge is required to get the job done. Just a note – to have such weight and leverage hanging out of your ignition is not going to be good in the long run, and it also won’t work (obviously) if your ride is a modern one with a chip in the key.