text: why have the big oil companies ignored bio diesel technology? it seems like many smaller companies have been investing in alternate energy technologies.  more specifically, bio diesel engineering has made it possible to produce fuel from bio waste.  why haven't the larger oil companies, with their billions in excess profits, gotten involved with this seemingly availible technology? big oil is rapidly coming up to speed, jeremy.  from treehugger.com, on april 6th:  "the burgeoning biodiesel industry got a friendly boost from a somewhat unlikely source: big oil. motiva enterprises, a large oil company headquartered in houston, recently announced that the motiva enterprises terminal in dallas will now offer biodiesel at any blend level. petroleum distributors who deliver biodiesel to retail outlets and other customers in the dallas/ft. worth area can now load pre-blended biodiesel on their tanker trucks. this allows distributors to get more biodiesel distributed, as the deal eliminates the additional cost and inconvenience of making two stops to obtain the biodiesel and petroleum diesel, and purchasing blending equipment. motiva, a partnership between shell oil co. and saudi refining inc., is among the first major oil companies to provide a blending and loading terminal for the alternative fuel; other refiners who already blend biodiesel at the terminal level include valero energy corp. and tesoro corp. biodiesel kingpin willie nelson was joined by fellow booster morgan freeman to announce the installation of a 30,000-gallon heated tank that will allow biodiesel to be loaded onto tanker trucks already fully blended with petroleum diesel."