Each can contains 100ml of paint, which is the appropriate amount for finishing a model.
These sprays are generally sprayed on the inside of a body shell so the colour stays intact during impacts, keeping the can about 30cm from the surface. After curing apply another coat, small details should be brush painted beforehand using Tamiya bottle paints for polycarbonate. These paints are impervious to oil and fuels, so they can be safely used on gas-powered R/C bodies. Never use these paints on plastic models.
For best results when painting a car body with multiple colours, spray dark colours first and light colours last. Metallic colours should be backed up with a silver final coat, whilst translucent colours can be backed up with like colours or metallics to give different effects. Experiment with scraps of Lexan to see what will work best for your project.