The man in the car sped down Modjeska Grade and blew through the stop sign, making a left toward Cook’s Corner, the motorcycle bar at the northern tip of El Toro Road. The motorcyclist coming from Cook’s Corner was obeying the law, but couldn’t avoid slamming into the truck. He died. In another incident, two brothers were riding their high-performance sport bikes on Lake Forest Drive on a clear afternoon. Near Toledo Way, one of the brothers sped up to catch the light before it turned red, while the other one slowed to stop. The speeding motorcyclist made it through…