Macy's boss says sales are down because people are buying cars.

Macy's boss says sales are down because people are buying cars. Now strong Auto sale should be sign of economy on rebound, however, maybe people are buying cars because of need- the avg. of age of American is 11 year, far cry from Father's day when he would buy car every three years.
We are always told, that lower price of oil is tax cut and people will spend but veracity of money is slow. Why? By the way, I just bought some Macy's stock which I think is cheap, also like oil companies that will stay in business.