The button icon is a modified version of an icon that's available under a CC-BY license.
Original icon credit: Autonomous Car by Adrien Coquet from the Noun Project at https://thenounproject.com/coquet_adrien/collection/cars/?i=2603392

The button sound is available under a CC0-license as "Car Lock" by hz37 on https://freesound.org/people/hz37/sounds/396448/
