SARS versus CARS

According to the Radio this morning, 140 people died from SARS in Beijing last month - about the same number as were killed in automobile accidents. Which made me wonder, why aren't we terrified of CARS? Consider the following:

• CARS have infected every city on earth
  
• CARS can be fatal on contact.
  
• Wearing a face mask is no defense against CARS
  
• In most cities, you are never more than 20ft away from a carrier of CARS
  
• Children and the elderly are most at risk from CARS, but even a healthy adult can be injured or killed by CARS
  
• You can't tell by looking at someone if they have CARS
  
• Many people pick up CARS at airports
  
• CARS have been growing steadily through the years
  

Well, anyway, you get the idea...