The Mercedes Power Unit: A Year in the Making

We're about where we'd expect to be with the maturity of the engine installation and the parts that we're already making for 21. We obviously didn't start as early as we'd like to have done for obvious reasons, but I think we caught up well. The interaction with Mercedes has been fantastic. They've been extremely supportive, recognized the fact that we had short time scales. And we've worked with them very effectively over the past few months.