The Alfa Romeo 4C sports car is just now arriving on our shores, yet parent-company Fiat’s R&D chief Harald Wester is already thinking about higher-powered derivatives. He recently told us that the 4C’s off-the-shelf 237-hp, turbocharged 1.75-liter four-cylinder engine has more potential: “We are only at 136 horsepower per liter, so there is space.” We’d […]