From “That Creeping Menace Called Smog” by Leigh White, May 5, 1957, issue of The Saturday Evening Post
For some time now, the Los Angeles authorities have been experimenting with various forms of automotive cutoffs and afterburners. To date, no satisfactory cutoff or afterburner has been developed for all types of motor vehicles. As soon as one has been perfected, however, its use will probably be made compulsory in Los Angeles, Cincinnati, and other cities where ozone smog has begun to menace our existence. Indeed, the day is not far off, it seems, when such systems will be mandatory equipment on all types of automotive locomotion, from the family sedan to the air transports of the jet age.
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