9.1  Introduction

• This section deals with hybrid cars that utilise two different energy sources, one of which is electric power and the other usually a petrol or diesel powered internal combustion engine and which have been produced since 1980.
  
  
• For information on earlier hybrid cars see Part 2, The Last 100 Years, Section 4.
  
  
• For information on fuel cell hybrid cars see Green Cars, Section 8.