2 weeks is 14 days or 1,500 miles to 2,100 miles a day or 150 mph for 10 hours to 210 mph for 10 hours.
3 weeks is 21 days or 900 miles to 1,500 miles a day or 90 mph for 10 hours a day or 150 mph for 10 hours a day.
24 hours a day (several drivers or shifts) times 21 days (3 weeks) = 504 hours * 50 mph (average) = 25,000 miles.
The TV reports that the money is good. There are two sources: from "coyoting" (carrying the illegals into the US and making transportation to a big city) and kidnapping (stealing someone else's illegals and holding them hostage in the big city).