The joint venture, which operates under the official name Rivian and Volkswagen Group Technologies, is prepping its first prototypes for winter testing in the first quarter of 2026, InsideEVs reports. These include VW, Audi, and Scout test mules equipped with zonal architectures, with consolidated ECUs and less wiring. The first crop of passenger vehicles will also be Audi, Scout, and VW branded models, including the VW’s ultra-low cost ID.EVERY1. Audi and Scout will feature three zonal ECUs, like the second-generation R1T and R1S vehicles, while the VW ID.EVERY1 will come with just one zonal ECU.