How To Convince Parents to Let Me Buy A Classic for my First Car?

So there is this 61 Cadillac that is for sale that I have enough for and is in AMAZING condition for the price. However I live in North Idaho and the winters aren't always the most forgiving. They are very against it because they say it won't be reliable. Please help me convince them :( via /r/cars http://ift.tt/2rMi2bG