This sounds completely out of character and in direct opposition to the actual history we know of the automotive industry. Remember the 'unintended acceleration' issue that Toyota cars featured a few years ago? During the court case it was revealed that Toyota firmware developers did not have access to even a bug tracker, and that out of 90+ 'suggested' or 'recommended' coding practices, Toyota's code followed only 4. While they might claim to engineer toward redundancy and safety, one thing is pretty clear about the automotive industry: They aren't talking about software when they say that.