Le triple post (or at least three posts in close succession).
Livery wise the Mercedes-theme has somewhat come full circle now.
While Ilmor had been in F1 some years already with Leyton House/March and Tyrrell.
In 1993 they signed a deal with Sauber after Sauber and Mercedes scrapped their plans to enter with Merc-build engines. However, Daimler-Benz bought 25% of Ilmor for 1993, and Sauber used Sauber-badged Ilmor-made engines that season, with Mercedes overseeing the project, thus using "Concept by Mercedes-Benz" on the car.
Encouraged by this, Mercedes now badged the engines for 1994, and Sauber-Mercedes was a thing.
This deal kept on for years. Ilmor was the company, Mercedes was a minority owner, and Ilmor made the engines that would power McLaren from 1995 and onwards. In 2002 Mercedes upped their ownership to over 50% and bought out Ilmor completely in 2005. This company is the same that produces the Mercedes engines in F1 today.
So, merging the liveries from 1993 and 1994 when Mercedes and what's now Mercedes AMG High Performance Powertrains. Add sponsor colors and you get pretty close to 2020 livery.
Note that there still is a company called Ilmor (they worked with Renault/Red Bull trying to fix some of the issues Renault had in the early hybrid era). That is Mario Ilien, the surviving half of Ilmor, and Roger Penske. That company does a lot of work outside motorsport, but also does the Chevy engines in IndyCar, and the spec engines in NASCAR Truck series. But while it was setup as a US-division of the original companies, the two have nothing to with each other today.
