How many times has new technology had some unpleasant side effects?  Case and point: automobiles.  They transformed our society and enabled freedom of movement to the masses, but at a cost to our environment, and it is the leading cause of injury-related deaths. 

Hybrid technology is a vast improvement in efficiency, and has less noise-pollution. The problem is people are getting injured since they don’t hear them coming.  This is especially true for the blind.  Read more: http://groovygreen.com/groove/?p=1962