 Before the construction of the North Central Expressway in 1950, Greenville Avenue was the main route to Richardson, Plano, McKinney and north to the states of Oklahoma and Arkansas.It is for this reason that the "Lower Greenville" area was developed as one of the most important centers in Dallas for shopping and restaurants, especially the area comprising "Lowest Greenville" in modern times.The arrival of the automobile in Dallas was via Greenville Avenue, and even today the Lower Greenville Avenue area is a hot spot for automobile and motorcycle enthusiasts.