I think, that C has still some usages, but for bigger projects, it is IMHO not feasible to use C or an equivalent for the whole project.
Most usage I see in generated code or small code samples that have to run rather fast. My questions:
* for a faster C, is there really a new language needed? (can't we go with better compilers)
* C2 should provide better tooling, but at first it is a drawback, since old tools are not working or are limited. How does that fit together? Would it not better, to use just C for generated code (where the usability aspects are also neglect-able).
Of course, every programmer wants to create a new language, but most of them are not lasting long ... and C2 did not convince me from the front-page.
I think Go has a good combination of mindshare and features for system software development. Rust may as well, though I know less about it.