For proof of the growing popularity of discount grocery stores, look no further than the parking lot.
On a recent evening outside the Aldi on South Grand Boulevard in south St. Louis, a battered pickup and a rusting Dodge shared space with a yellow Hummer and a late model Honda SUV.
"You used to just see old, beat-up cars," said Karla Robinson of St. Louis, who has become a regular at Aldi and Save-A-Lot since the economy tanked. "Now you see Lexuses."
Once relegated to the fringes as places for the downtrodden and those on fixed incomes, discount grocery stores are moving into the American shopping mainstream.
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