Paul A. Eisenstein | @DetroitBureau Published 11:09 AM ET Sat, 16 March 2019 CNBC.com Churning out an astounding 1,900 horsepower, Ferrari’s Pininfarina Battista is one of the most powerful automobiles ever produced. It also happens to be all electric, one of a score of battery-based vehicles debuting at this week’s Geneva Motor Show, which runs…