"Who is the prototypical American millionaire?
• We live well below our means. We wear inexpensive suits and drive American-made cars. Only a minority of us drive the current-modelyear automobile. Only a minority ever lease our motor vehicles."
See page 9 of the book:
http://fop86.com/The%20Millionaire%20Next%20Door/The%20Millionaire%20Next%20Door.pdf