@
neutron256
KERS can be the same thing as an hybride cars per definition(Kinetics energy recovery system), my point is mostly in the technology use in actual "KERS" system, mostly use it as short burst of energy(that's the difference with "hybrid" car, as they are design for fuel economy/long term usage of recovered energy).
As you stated, Porsche, Ferrari use it, that prove my point, its for race/high performance application with a specific usage. The fact is that technology have been develop for political reason, gas engine pollute, high performance car had bad reputation with green people, meaning bad image for racecar and the industry=less money.