At present time, nothing, which is exactly what Scott Bellware has recently described as a significant and gaping hole in our industry:

We have a gaping human resource hole in our software product development organizations through which incredible value continues to evaporate. We need to stand right where we are and accept the antiquated organizational mess that we have created and that we perpetuate by not looking outside of our industry to the exemplars of the meritorious success that continues to elude us.

Nicely stated, Scott!

To understand what the above has to do with Toyota, take a visit to Scott's "Chief Engineer" piece from this last December. /WELL/ worth your time and effort!