Havent you basically just described a lease with no down payment and a flexible cancellation policy?
i dont want to buy a new car (new as in replacing my current car,im ok with used cars) because theyre overpriced, but i dont want to lease either due to what i consider bullshit costs, plus lock-in. as a result, ive had the same car since 2009, despite easily being able to afford something new. but fuck that, id rather put that money towards investing