Tony nodded as Rex began to explain what he'd added to the car. "And with the compatibility issue... I remember you mentioning a fuel problem before? Was it this car?" Fuel and alternate energy sources were constantly on his mind these days, especially with people surrounding him able to provide him with information it would have taken him years to divine on his own.
"Designed cars," Tony repeated, a healthy sort of respect in his voice. "I leave the design to the Europeans and just muck around with the shoddy engineering once I get my hands on them. The design's a skill, but this," he gestured to the engine. "Is where the brains come in. If there'd been any critical thought put into the design of the Porsche 550, James Dean'd still be alive."