[quote=The-Shoveler]
But I don’t think it will be in the average home
anytime soon making replacement parts for your car.
But I can see these being used in just in time manufacturing big time (Automation anyone?).
[/quote]

Maybe not car parts but they’ll be in the home. This latest kickstarter campaign is one for less than $300.

http://www.kickstarter.com/projects/pirate3d/the-buccaneer-the-3d-printer-that-everyone-can-use

Here is somebody using one to 3d print his way to an aston martin.

http://www.telegraph.co.uk/motoring/car-manufacturers/aston-martin/10219578/Using-a-3D-printer-to-build-a-car.html