Printing lightweight parts could signal a step change for the EV industry -- and for mainstream EV adoption. Lighter vehicles means better fuel efficiency, which will help allay the range anxiety consistently cited by would-be consumers. One example of the technology touted by GM and Autodesk is a 3D-printed stainless steel seat bracket. Normally, this is made up of eight parts requiring a number of separate suppliers. The printed version is not only one solid component, but is 40 percent lighter and 20 percent stronger.

GM, like its rival Ford and other manufacturers such as General Electric, has been using 3D printing to create prototypes for years, but says the technology is now ready for the real deal. In fact, according to GM's director of design and manufacturing Kevin Quinn, these 3D parts could appear in high-end motorsports in as little as a year. And within five years, GM wants to be producing tens of thousands of parts at scale.