DETROIT - Every spring, automotive engineers and others with a professional interest in technology descend upon Detroit for the annual SAE World Congress. Hosted by SAE International, a group that promotes the interests of auto engineers, the Congress draws tech-minded folks from across the country - and around the world. Only people involved with the auto industry are permitted to attend the World Congress.

More than 600 exhibitors set up displays on the show floor, including dozens representing specific countries, states, or regions - presumably hoping to attract investment in their areas. Nearly 1,400 technical papers were presented during the four-day Congress. Seven OEMs (Original Equipment Manufacturers - meaning actual automakers) participated in the event, which was hosted by Chrysler LLC.

More than 33,000 automotive professionals showed up at Detroit's Cobo Hall. They came from 49 countries, led by South Korea, Japan, Germany, China, the United Kingdom, and India. This was the 75th anniversary of the Congress's presence in Detroit, which dates back to 1933.

Only a few organizations hold news conferences during the SAE Congress, and fewer yet deal with topics of interest to non-engineers. Once in a while, though, a "sleeper" comes along. What could be the most notable announcement at the 2008 World Congress involves a new joint venture between two companies: FEV and Raser.

With so much concern about fuel economy these days, whether about gasoline prices or the new 35-mpg CAFE (Corporate Average Fuel Economy) standard that was recently legislated into near-future existence, fuel-efficient vehicles are a lot more compelling than they used to be. If 35 mpg won't suffice, how about 100 miles per gallon?

That's what the FEV/Raser folks promise for a full-size sport-utility vehicle that they're developing - with the cooperation of a major domestic automaker. No one was ready to reveal which automaker that might be, but the joint venture promises to have such a vehicle ready for testing later this year. According to company spokespersons, a demonstration of the vehicle will be announced at a major auto show, as early as the third quarter of 2008. If all goes well, the organization claims the vehicle could ge on sale in about two years.

The FEV/Raser SUV won't be a hybrid. Rather, it's an electric vehicle with a "range extended." A gasoline engine will be installed, but it's intended only for charging the batteries. The SUV will run on electric power alone.

Also vying for newsworthiness was the exhibit presented by Scuderi, featuring an engine that's completely different from anything used today. Better yet, the Scuderi folks assembled an explanatory video that makes the principle surprisingly easy to understand.

BMW, meanwhile, held a news conference to promote the latest version of its Hydrogen 7 sedan, which is a 7-Series model with a regular internal-combustion engine - which happens to run on hydrogen. Both dual-fuel (gasoline or hydrgen) models and monofuel (hydrogen-only) versions - nearly a hundred in all - are now in use, for demonstration and evaluation purposes.

Hundreds of technical sessions took place in meeting rooms alongside the upstairs corridors of Detroit's Cobo Hall, along the downtown riverfront. Some topics were understandable to the layman, but most delved into narrow, esoteric areas of interest only to devoted engineers and analysts who worked on specific automotive elements.

One tech session on "human factors" focused on a recent study of Road Rage, a subject important to everyone. Yet, this session drew only a handful of attendees. A follow-up session addressed reasons why people might feel ill after watching in-car video entertainment, but only a handful of people showed up for that one. A session covering new approaches for navigation systems, including prediction of preferred driver routes and making the best use of routing for hybrid and electric vehicles, also drew a modest crowd. Some of the narrowly-focused, highly-technical sessions filled their rooms more fully.

Tech-minded historians held an entire day of sessions, some of which drew a capacity crowd. One of them looked at "the automobile world 100 years ago," at the time when Ford's Model T debuted. Another, called "Engineering the Universal Car," delved into the intriguing complexities of that Model T, which was only deceptively a simple machine. Lawrence Gustin, a retired GM public-relations man, showed a fascinating set of still and moving pictures featuring many of the "auto pioneers." Another GM person gave a presentation on technological developments, with emphasis on hybrid powertrains - looked back as far as the 19th century. The final history session related the development of Chrysler's Hemi V-8 engine, with a heritage dating back to 1941.

In addition to several dozen rows of exhibits, the show floor held three theater areas, where forums on subjects of more general interest were conducted. In each forum, a moderator teamed with a panel of experts in a given field. Each expert gave a short presentation, followed by a question-and-answer session that sometimes turns surprisingly lively - and sometimes fizzled a bit in intensity.

Most of the forums played to a full house. One of them looked into alternative fuels - a subject that gets plenty of attention nowadays. Another covered the effect of transmission modifications on fuel-efficiency. One dealt with fuel-economy issues, including:
+ How much people are willing to pay for fuel-efficiency (answer: not much).
+ Do drivers really want fuel-efficiency?
+ What impact would tax increases have on demand for fuel?
+ What can manufacturers to do improve fuel-efficiency, and what are they doing now?

On the lighter side, Toyota's Partner Robot wandered around the floor periodically. One raffle-winner drove home a Dodge Nitro. Most important, though, the World Congress offers an opportunity for serious technical people to learn from what some of their colleagues have been working on. To allay fears of giving away trade secrets, SAE International insists that comments from presenters of technical sessions cannot be quoted. It's a free exchange of ideas, with the goal of improving every participant's knowledge of the state of the industry.