So you were driving your old classic the other day, when your cell phone slips right through the giant gash in the seat and off into some netherworld. The next 30 minutes are spent digging through what seems like a spider-infested hay bale (German car owners, you know what I mean) to retrieve your communication link with the world.
The interior is usually one of the last items completed in a restoration project. It should be done after the paint and bodywork to avoid the inherent overspray and dust that fills every crack. The insides should also not be given much attention until after major mechanical modifications and restoration because of the grease and other potentially fabric-damaging aspects of such labors.