the main advantage is that the spark will happen much more faster and has much more energy.
if you want to know more and like the colorfull language of catalogs/webpages you may look at
www.msdignition.com and the like.
its basicly the same, just homemade and only one spark at a time. multiple sparks may be added later
you probertly won't run 2mm spark plug gap in a car, it was just to show the spark better.
but who knows, maybe you engine will like a very big plug gap
this board just needs a trigger, this can be points or some kind of electronic, like the SPi.
and the first try on a car was successfull. but we need some kind of case, there are 300 volts all over the pcb we have to isolate. there are allways some minor things that stops you working
