New York (CNN) -- A New York City taxi driver is charged with keeping more than $28,000 that should have gone to the Metropolitan Transit Authority in E-Z Pass toll fees over the past two years. Rodolfo Sanchez, 69, of Long Island City has been sneaking through toll plazas on the Robert F. Kennedy Bridge and Midtown Tunnel by "piggybacking," or tailgating cars directly in front of his cab, and slipping through the toll lane before the barrier came back down, according to Queens District Attorney Richard Brown. The cabbie allegedly crossed two of the city's bridges and tunnels more than 4,000 times from August 2012 to April 2014.
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DA says driver Rodolfo Sanchez "piggybacked" through toll gates behind other cars
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He made 4,000 trips over bridges and through tunnels without paying, DA says
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Sanchez faces grand larceny and other charges, could get seven years in prison
Sanchez told investigators that he knew there was no money on the @placeholder, and he dodged the tolls because he needed the money for his family, according to the attorney general.