C8 Corvettes Have a TCPCFCCRBB

Here's a close-up of what the unique C8 Corvette part looks like:

An auto industry first, the 2020 Corvette sports a curved rear bumper beam in pultruded carbon fiber composite produced with 87 individual carbon tows and eight carbon fiber non-crimp fabrics (NCFs) impregnated with polyurethane-acrylate resin. The hollow, two-chambered beam is 66% lighter than the outgoing aluminum beam and met GM's demanding dollar-per-kilogram targets. Source | Shape Corp.

Maybe at this point, a definition is in order. I had no idea what "pultruded" carbon fiber composite is, so I looked it up. Pultrusion is a continuous process for manufacture of fiber-reinforced plastics with constant cross-section. The term is a portmanteau word, combining "pull" and "extrusion". As opposed to extrusion, which pushes the material, pultrusion pulls the material.

Here it is on a C8 Corvette:

Among its many notable innovations, the new 2020 Chevrolet Corvette sports car from General Motors Co. features the world's first radius pultruded auto part. The vehicle's rear bumper beam (shown above mounted to a rolling-chassis cutaway) was produced by Tier 1 supplier Shape Corp. using an innovative process and machine developed by Thomas GmbH + Co. Technik + Innovation KG that can produce curved pultruded parts. The carbon fiber composite beam uses a variety of non-crimp fabrics in carbon fiber produced by Vectorply Corp. and infused with polyurethane-acrylate resin from Scott Bader North America. Source | Mark Richardson for SPE Automotive Div.

From this side of the C8 undergoing repair, you can see the end of the two-chambered beam a bit better (at the red arrow, under the silver, heat-shielded wiring harness):

As for the title of this post, I've noticed that some people like to make up their own acronyms that nobody else in the world uses, so I thought I'd try my hand at it.

TCPCFCCRBB = two-chambered pultruded carbon fiber composite curved rear bumper beam!