[some_other_dave]

Originally Posted by jamesqf

Seems as though all this discussion has become moot, since spark plugs are slated to become outdated technology: Lasers Could Replace Spark Plugs, Making Engines More Efficient | Popular Science

IIRC, they've been "coming in the next year or two" for at least five years so far... I personally am not holding my breath.

-soD