if animal control is active in your area, get animal control on it and get it out of there. you dont know what the animal knows or where its going to go.
Never do this- animal control takes to county or city shelter- and during kitten season- which it is- the cat will be destroyed after a few days
Make a lot of noise entering your car, beep horn as you are backing up- go very slow.
I have an outdoor cat I adopted and made indoors she hated it the first month- now she's so happy inside always - it takes time but very worth it.