WORLD—Car manufacturers around the world are aiming to increase sales to women by replacing traditional "check engine" lights with new warning lights reading "Check Engine, or don't, whatever, it's probably no big deal." The warning light will flash when the car's computer detects something seriously wrong with the engine or transmission or other key components of the car, but will assure the female driver that it's not a big deal and they can drive with the light on indefinitely. "This is a more realistic warning light for the female market," said one executive at Toyota. "Frankly, the other one was...