how to sneak my cat out of house?

[Lexi]

i know this seems like an crazy question and i don't know which section to post this in so sorry if its incorrect and ill try and make a long story short my parents are being awful people my cat has a spraying problem and refuse to do anything about it I've tried talking to my vet and searching online for solutions to solve this problem but to my disgust my parents have scheduled a death appointment for this poor poor animal he is the sweetest and most loving cat but has one problem in a panic i posted all over Facebook twitter craigslist called a few places and finally a craigslist ad has been answered guy sent me a lovely message he seems like a loving caring person he described where he lived how hes had experience with cats with problems like his and he really loves animals and wants to take him excited i told my parents at first they where excited told me to message him back yes and to meet us this weekend i did and now they're me no because he doesn't want us to meet him at his house which is hours away and hes going somewhat close to my town because he needs to get a cat carrier from his friends plus he doesn't feel comfortable with someone knowing where he lives and this day and age i totally understand he is an older cat our human society told us he was unadoptable and that they would end up putting him down i will never be able to live with myself if i cant save his life he doesn't deserve to die and this guy seems wonderful and of course i understand i can till take my cat back if he seems crazy now my question is tomorrow i am meeting him (not by myself) but my parents are so set to kill him and i cant let that happen i live in a one story home my parents are always home how am i to get my cat in a carrier and out the door in and too my car without them seeing it? my car is close to our house because we don't have that much of an drive way by the way i'm 23 years old and the cat does belong to me he just lives in my parents house with me. i don't care what the consequences will be for me i just want my cat away from them any ideas will help please i'm desperate!!!!
first off to the rude commentators this is not the whole story as i have said so in the begging i HAVE DONE EVERYTHING I COULD OF DONE to solve the problem so hands of choas i suggest you know your facts instead of jumping to conclusions that i have done nothing cuz you clearly do not what is going on and yes that is very selfish of me to give the cat up to a loving home even though im going to be thrown out in the streets and again hands of choas if you read a little bit better maybe you would have read i called shelters no one would take him and thank you for your concern but i have done EVERYTHING in my power to help him stop as i said so learn to read and leave your rude ass comments to yourself your ignorent
to everyone else thank you