Automakers use each others parts all the time. Dodge used Mitsubishi engines in the K cars and early minivans. Rolls Royce use Mercedes engines today. Nissan used Toyota's hybrid transmission in early-2010s Altimas.
This is a good sign for Criuse being a competitor in the self-driving space, and a sign of self-driving market health in general. Much better than Toyota investing $500 billion in Uber for self driving.[∆]