Subject: What are the differences between gasoline and diesel cars?

Dear Mad Scientist Organization,
      I have some questions that I did not know where else to look and was hoping 
I could come here for help. First, why can normal diesel not be run in a normal 
gasoline engine? second, why can biodiesel in particular not be used in a normal 
gasoline car? and third, what is done to diesel to make it useable for a gasoline 
car? If you could answer these questions then I would be very appreciative. 
Thanks for your time,
                Noah Johnston
          (permutorius@hotmail.com)
Ps. Just teaching me the difference between a diesel and gasoline engine would be 
a big help.

Re: What are the differences between gasoline and diesel cars?