Over 70 percent of all Porsches ever built are still on the road--or at least in running condition in a climate-controlled garage. Porsche Classic is the company's in-house restoration and parts unit, and in this video, they walk us through what they do.

Aside from the very interesting snippets of actual work on the cars Porsche Classic handles, the video includes some great vintage racing footage. Well worth the 6:44 runtime.

[Porsche via YouTube]