Cab owners must upgrade their vehicles and pay $1 million dollars in fines for illegally using 251 salvaged or rebuilt cars.
The fines are part of a settlement with the city, which prohibits rebuilding wrecked cars and using them as taxicabs.
The city originally sought $17 million in fines for endangering riders, the Sun-Times reports, but settled for a $1 million penalty and repairs.
Garber owns two of the companies that used salvaged cars as cabs -- Chicago Carriage Cab and Royal 3 CCC Chicago Taxi.
Elite said it would replace its cabs over a five-year period and would replace other cabs with hybrid vehicles when it came time.
The company told the Chicago Tribune it already uses more than 100 new hybrids in Chicago.