The FIA has agreed to delay the introduction of a rule that will force cars to run under electrical power only in the pitlane from the start of 2014, AUTOSPORT can reveal. The requirement was aimed at showcasing the use of electric power in F1 as the sport shifts to more environmentally friendly technology.
Source: http://www.iracing.com/inracingnews/formula-one-news/f1-formula-one-news/f1-delays-introduction-of-electrical-power
Johnny Herbert Al Herman Hans Herrmann Franзois Hesnault