I don't believe it is possible to complete the steps that fast. I believe he is quacking! Regardless if he is or not doesn't really matter at this point. If he is taking your car without your permission that is a problem. If you want to know if he is using your car place something behind one of the wheels and see if it has been ran over the next morning.Then you will have your proof and you can then set your boundary. Normally your gut is right!
Your home is your safe place don't let him invade that space and make you feel that you have to stand guard in your own home. You deserve better! What are you willing to deal with? What are you willing to accept? If you have to kick him out early . . .he will manage!
Keep your eyes open . . .more is to be revealed!
(((Hug)))