In the automotive sector, Japanese manufacturers agreed that no production car would exceed 276 hp (206 kW; 280 hp); the agreement ended in 2005.  German manufacturers limit the maximum speed of high-performance sedans (sedans) and station wagons to 250 km/h (155 mph).    When the Suzuki Hayabusa motorcycle surpassed 310 km/h (190 mph) in 1999, fears of a European ban or severe repression led Japanese and European motorcycle manufacturers to agree on a cap of 300 km/h (186 mph) in late 1999.  See the list of the fastest production motorcycles. Gentlemen`s agreements were a widespread discriminatory tactic that, according to reports, was more common than restrictive alliances to maintain the homogeneity of upper-class neighborhoods and suburbs in the United States.  The nature of these agreements has made it extremely difficult to prove or prosecute them, and they were long after the U.S. Supreme Court`s decisions in Shelley v. Kraemer and Barrows v. . . .