Non-Combustion 101
      
      Powering cars without internal combustion engines
The primary choice for non combustion power of vehicles 
is electricity.  Electricity created on board or charged from 
a wall outlet like your cell phone.  Electricity is then used 
to power an electric motor to turn the wheels.   Any 
power not being used is stored in a battery, waiting to 
power your next trip to the grocery store.  Now, anyone 
who owns a rechargeable battery-powered cell phone 
knows that there are inherent problems with these 
devices...its easy for them to not work.  Batteries can lose 
their charge over time, sometimes that time is five days, 
sometimes five minutes.  Recharge time isn't quick, 
certainly longer than a trip to the gas station.  
OK, batteries are a problem.   But they are probably the 
only one.  Electric motors are quite capable Electric car 
manufacturer Tesla Motors advertises 0 to 60 MPH in 3.9 
seconds and a 14,000 rpm red line in their electric 
roadster.  According to road and track magazine, the 
quarter mile is less than 13 seconds.  That is a healthy 
sports car.  So whats the problem-first its still expensive, 
over $100K and it can't go far, 244 miles per charge 
advertised (maybe?).  
What about hybrids?  Hybrids are interesting- the Toyota 
Prius is certainly been a marketing success, but it still 
uses gasoline-just less of it.  When you drive at highway 
speed- your using plenty of gas, its only electric only- at 
low speeds.  Its a good try and an interesting solution to 
the problem.  However, there are some other drawbacks.  
There are two drive systems...more things to go wrong.  
Neither drive system is very good.  Its a compromise and 
its compromised.
Were just not there yet-- lets keep trying, and trying 
different things.
      
      
