Cabbies Sue To Stop GPS Requirement NEW YORK - A group of cabbies sued city regulators Wednesday in an attempt to block a new requirement that all taxis be outfitted with global positioning systems and software that will record where they drive. The move comes two weeks after thousands of cabbies went on strike for two days to protest the rule. In the lawsuit, the drivers argue that the city overstepped its authority and acted unconstitutionally when it required the GPS units. Their lawsuit also makes the unusual argument that the GPS devices will give away trade secrets by disclosing the cabbies' driving patterns. Most taxi drivers, it explained, cruise routes of their own design that they believe lead to the most lucrative fares. From wire service reports