[SentraSE-R]

Thanks Mark y Carlos,

I found a fairly comprehensive analysis here. There are 67 pages in the transportation chapter, and the Transportation Life Cycle Analysis proves that diesel is ~20% less costly in life cycle costs. Unfortunately, I couldn't find a separation of production/shipping cost (upstream cost) v. on-road cost (downstream cost) in the life cycle analysis.

Just a WAG tells me you LCA guys are right. If we're employing fleets of supertankers to import millions of barrels of crude oil from the middle east annually, what is the cost? 160 million bbls/yr from Saudi Arabia alone = >160 shiploads X 6000 miles each way (at 20 mph X 24 hrs/day) X 25 days RT each. That's 4000 days of supertanker operation, or 10.95 supertankers' annual pollution - as much as 547 million cars would produce in that same year. Add other middle east exporters we buy from, and it's easy to see transportation pollution just for middle east crude exceeding all our US car-produced pollution.