3.3.4  Cars Using Hydrogen 

• For cars using hydrogen powered fuel cells see Green Cars, Section 8.
  
  
• BMW: BMW’s Hydrogen 7 car has an internal combustion engine that can run on petrol or hydrogen. When was it first produced?
  
  
• The car was powered by a 350 hp (260 kW) 12-cylinder engine. 
  
  
• Mazda: In 2004 Mazda introduced the RX-4 Hydrogen RE, rotary engined, concept car. It was designed to run on petrol or hydrogen.
  
  
• The car has a maximum range of 341 miles (546 km) when running on petrol or 62 miles (99 km) when running on hydrogen. 
  
  
• In March 2006 Mazda started to deliver these cars to customers.