This is a 16 FinFET SoC with an 8 core custom ARM64 CPU and the next generation 512 Core Volta GPU. Nvidia hinted before that Volta would stick to 16nm manufacturing.
Nvidia plans that Xavier will replace the dual-core Drive PX and can do the same sorts of things with a fraction of the power. It should work with a 20 W TDP envelope.
This new computer vision accelerated SoC will speed up self-driving and can process Dual 8K HDR video streams which will be pretty crucial for the future use planned for the chip.
Design for the ASIL C Fictional safety will sample next year but this is as much as Jen-Hsun wanted to share now It should be able to reach 20 bps DL and 160 SpecINT. With 20W TDP it won't be heading for any tablet or, god forbid, a phone.