Zetsche was clearly referring to when he said, $"$We are changing the mindset of our people to believe we are not satisfied anymore with 'good,$\text{'}$ that it always can be better and it always has to be better. This takes time, but there are signs people will super hard to get the last $5\%.$ That doesn't necessarily cost you money$-$it's just doing it better, more professionally and more precisely."