Audi announced that it will be offering built-in toll transponders on new vehicles, so owners won't need to buy special devices that are mounted on windshields or front bumpers to automatically pay tolls.

According to Audi, the new device will work across state lines and be recognized by multiple tolling agencies, including EZPass (New York), I-Pass (Illinois), and SunPass (Florida). Billing to a user's account will be seamless, Audi says.

The device, called the Integrated Toll Module (ITM), will be standard equipment on some Audi vehicles starting later this year; the models have not been announced.

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The setup is compatible with the HOV (High Occupancy Vehicle) and HOT (High Occupancy/Toll) charging systems that exist in some states as well. ITM will also work on certain toll roads in Canada and Mexico.

The device sits inside the vehicle’s rearview mirror. The technology was developed by Gentex, which supplies self-dimming mirrors for Audi and other manufacturers.

ITM also takes windshields completely out of the equation, which means defrosters, laminated glass, and other technologies not compatible with windshield tags are not an issue.