We had our Hyundai Veracruz in for inspection and oil change, and the service manager recommended a "fuel induction service" for approximately $150... He explained that this service involved passing a chemical cleaning solution through the fuel injectors that would ensure proper acceleration and "PREVENT THE GAS PEDAL FROM STICKING". I was shocked to hear that I could have a problem with the gas pedal sticking - so I asked "Really - this service will prevent my accelerator pedal from sticking?" and his response was "ABSOLUTELY".
First off - detergents in gasoline are what keeps fuel injectors clean, and is completely unnecessary. Second - this treatment does nothing to address accelerator pedal sticking issues, even if there were issues, which there are none reported (i.e. like Toyota issues).
This is a scare tactic to sell unnecessary services and is essentially theft by deception. Take your service business to someone you can trust.