Car body advertising pays for itself when the wrap is planned like a rental, not a hobby project. Start with a surface you can live with for three months: a clean, flat panel, no rust, no peeling clear coat. Measure it, photograph it in daylight, and list the exact dimensions in centimetres.
Price by exposure, not by sticker size. A route that passes a busy intersection twice a day is worth more than a quiet street with a bigger panel.
FAQ
Do I need to declare the income?
Yes. Car body advertising is taxable income in Indonesia.