Michael Valentine, 74, Who Helped Drivers Stay Under the Radar, Dies
An engineer who loved to drive fast, he helped build an industry-altering device that made its debut after the national speed limit of 55 m.p.h. became law.
An engineer who loved to drive fast, he helped build an industry-altering device that made its debut after the national speed limit of 55 m.p.h. became law.
