And take particular note on the importance of wet sanding the paint, and use gloves too. The dry dust is a very dangerous carcinogen that you don't want to breathe or get on your skin. Even the wet slurry should be avoided and all consumables disposed in a plastic bag.
Be aware the the paint can either be a 2 Pack Urethane (Factory or base applied) or an Alkyd Enamel (Unit Repair). The Enamel is environmentally friendlier, but only marginally. Depending of the Paint Type on the vehicle, you might have issues applying a different topcoat without a proper tiecoat or primer. Avoid Auto Parts shop Acrylic topcoats.