Heres another good joke:
Toyota Prius
The joke is that it barely gets 40mpg or something like that & its ment to be saving the planet (all the trendy people have one- "look at me, I drive a prius because I care about the enviroment...."). A half decent diesal can get 40mpg, or a decent modern diesel can do in excess of 60mpg- even decent petrol engines can do well over over 40mpg if they arent silly 5.0 litre monsters and what not.
Honda Clarity ftw...