I am 79 years old....still love to make my car look great....years ago all I used was polish and wax....I have a 2019 white camry early this year I clayed my car and put put on wolfgang SI02 sealant...the car looks good...now it seems ceramic coating is what people are doing...now if I want to put on a ceramic coating...as far as I know I have to use clay or whatever to get rid of the sealant...and start over...what can I use to apply a coating ....a spray...don`t want to spend a whole lot of money