Tesla and Ford Motors diversity

Read the Tesla and Ford Motors case studies in the text (Cases 16 and 18). Jot down any additional thoughts based on your general knowledge of the automotive industry and personal experience with buying, driving, fueling and maintaining cars. Background research may be needed to satisfy your curiosity and answer questions raised by your readings and recollections.
Questions
How have Tesla and Ford Motors diversified over the past 10 years? What are the criteria for deciding whether this is a good idea? Has this been a good idea?
On a scale of 1-10, where 10 is highest and 1 is lowest, how well do you think the staff capabilities and organizational structure at Tesla and Ford Motors support their respective strategies?