How do you remove light scratches from a side glass window in a car?

Glass polishing kits come with the necessary components to polish out scratches and hairline cracks with an electric drill. You can remove any scratches or cracks that are shallow enough to not catch a fingernail. These kits are sold at many Auto Parts Stores. Here is also one online source. Janvil. Their site is htp://www.janvil.com