Ford has announced that it is moving its self-driving portfolio into a separate division, called Ford Autonomous Vehicles. This wing will contain its $1bn Argo artificial intelligence assets, and the parent plans to invest an additional $3bn more here. It’s a similar move to that of General Motors, which spun out Cruise and netted a $2.25bn investment from SoftBank, but in both cases, there’s a sense that the auto makers want to be able to cut ties with these projects quickly, should things go south. On the one hand, this approach is a way for Ford to segment its core business more easily. Outside of the parent company, the start-up could be more agile, unencumbered by all the legacy overhead…