Lawmakers may not be able to address the safety issue in private cars, although automakers surely can. They could finally make it safe for kids to ride in the front seat — where they could be seen. Or they could add an alarm that alerts drivers about buckled-in backseat passengers when the engine is turned off. Given all the alarms about unbuckled seat belts, passing cars and obstacles front and rear, a lifesaving back-seat alarm is not asking too much.