I was really displeased with this book, and I am familiar with the general format of the "Evil Genius" series since I own quite a few of them. In this particular book of the series, there is little insight dispensed, and mainly you are being given just a list of components you'll need and a vague idea of the kind of work you need to undertake to get your systems working. Most of the instruction comes from the kits specified, and you could have done that without the book! If you are really interested in automotive electronics more from the viewpoint of wondering how does it work and how does it all fit together to control the automobile, then let me suggest "Understanding Automotive Electronics", currently in its sixth edition, by William Ribbens. This book is more than a automotive technician manual, but it is not so intense that you need to have more than a college sophomore's level of understanding electronics either. Read that book, then come back to this book for project ideas, but not much more. Amazon does not show the table of contents, so I do that here:
Chapter 1: Instrumentation
Chapter 2: Comfort Features
Chapter 3: Intelligent Functions
Chapter 4: Security and Safety
Chapter 5: A Computer in Your Car
Chapter 6: Power Supplies
Chapter 7: Display Technologies
Chapter 8: Input Devices
Chapter 9: In-Car Audio
Chapter 10: Storage Devices
Chapter 11: Speech Recognition
Chapter 12: GPS
Chapter 13: Onboard Diagnostics
Chapter 14: Wireless Connections
Chapter 15: Car PC Software