They're a bit more than an hour into a van tour of the destruction of Hurricane Katrina. Scott's employer, Isabelle Cossart of Tours by Isabelle, calls it 70 miles of destruction in 3 1/2 hours.
Nearly two years after Katrina turned the New Orleans area into a lake of misery, demand for tours of the devastation overwhelms that for visits to mainstay attractions such as cemeteries, plantations and swamps.
"Our survival depends on it. If I quit doing the post-Katrina city tour, I'm out of business," Cossart said.
Scott's van passes the convention center and Superdome, where thousands of refugees suffered after Katrina. "The convention center was never supposed to be a shelter. That's why they didn't have food there," she says.
She turns the van toward areas little known to outsiders before Katrina: Gentilly and Lakeview, where the view of Lake Pontchartrain provides respite on the way to the Lower 9th Ward. Scott drives on to St. Bernard, the hard-hit parish just east of New Orleans where she lived until the storm.
"It used to be, we did nothing but plantation tours," Cossart said. The $58-per-person Katrina tour now makes up three-quarters of her business, and she recently bought a third van.
Tourism officials have struggled with post-hurricane stress on the industry. Some downtown hotels - including the Hyatt and the Fairmont - remain closed. But the convention center and most tourist attractions are open. The bellwether French Quarter was almost untouched by hurricane.
Kelly Schulz, spokeswoman for the New Orleans Convention & Visitors Bureau, said the disaster tours help convince travel agents and convention bookers that devastated areas are distant from tourism venues.
Cossart said the tours began just over a month after Katrina, which struck Aug. 29, 2005. The U.S. Army Corps of Engineers hired her as a guide for Japanese engineers who had worked in Kobe after the 1995 earthquake.
After visiting levee breaches, the wiped out Lower 9th Ward and Biloxi, Miss., Cossart said she asked how long they thought it would take to rebuild. Their answer, she said, was 10 years plus time for political maneuvering.
Scott, who is living an hour northeast of New Orleans in Carriere, Miss., has gutted her 3,100-square-foot house in Chalmette but hasn't yet decided whether to rebuild. She worries about environmental safety because more than water was released by the storm.
As she pulls into her old neighborhood, she tells passengers about the 1.3 million-gallon spill from the nearby Murphy Oil tank farm that complicated her cleanup and clouded her future.
For Scott, Katrina and its aftermath are very personal matters. Cossart asked her how she felt about disaster tours. Her response was quick to the point. "This is history. People need to see what happened here so they can fix it where it never happens again."