The lesson of Southern Pacific is further exemplified by the more recent holding in Morgan _v._ Virginia,[824] in which the Court was confronted with a State statute which, in providing for the segregation of white and colored passengers, required passengers to change seats from time to time as might become necessary to increase the number of seats available to the one race or the other. First, reciting the rule of uniformity, Justice Heed, for the Court, said: "Congress, within the limits of the Fifth Amendment, has authority to burden [interstate] commerce if that seems to it a desirable means of accomplishing a permitted end. * * * As no State law can reach beyond its own border nor bar transportation of passengers across its boundaries, diverse seating requirements for the races in interstate journeys result. As there is no federal act dealing with the separation of races in interstate transportation, we must decide the validity of this Virginia statute on the challenge that it interferes with commerce, as a matter of balance between the exercise of the local police power and the need for national uniformity in the regulations for interstate travel. It seems clear to us that seating arrangements for the different races in interstate motor travel require a single, uniform rule to promote and protect national travel. Consequently, we hold the Virginia statute in controversy invalid." STATE REGULATION OF MOTOR VEHICLES; VALID REGULATIONS Cases arising under this caption further illustrate the competition for judicial recognition between the interstate commerce interest and local interests, especially that of public safety. A new element enters the problem, however, which lends some added weight to the claims of the police power, the fact, namely, that motor vehicles use highways furnished and maintained by the State.