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Some people are following here. This is why Indian and Chinese companies are working on ceramic engine development. In an ICE, you can't control the 'burn' of high pressurized (fuel injected) fuel at extremely high AFR's. You can however control it at lower pressures, i.e. carbureted, and those AFR's could be reached easier with a vapor that hits its autoignition temperature without spark being applied. (the problem is how do you bridge the gap from rolling out of spark, so far the only guy we know that did this is Yunick, would be a nice project later in life). With the added 'efficiency' benefit not only of the extreme AFR but of the fact that no high energy ignition, or ignition at all, is needed after the engine is at operating temperature. In theory an alternator working full time/automatically would not be needed as well.
Smokey's design failed because of personal outlook/politics, and the fact that it was extremely impractical for the average consumer, who wants to hop in their car and start it up and go for a drive, not to wait for operating temperatures or worry about extreme engine heat.
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