10 'Bus Horn' Sound Variations in 35 Seconds (no copyright) - YouTube
♫ 1 - Semi-Truck Horn Sounds
TOBBI 12V Kids Ride on Truck Car with Remote Control, Battery Powered Off Road Ride on Toy Car with MP3 Connection LED Lights Music Horn, Black - Walmart.com
Amazon.com: Waterproof 115db Electric Sound Horn Loud Speaker Truck Warehouse Alarm Siren Support MP3 Playback : Electronics
12V Kids Ride on Truck, Electric Dual Drive Car Toy with Remote Control, MP3 Player, LED Light, Built-in Horn, Battery Powered Vehicle for 3 to 6 Years Old Kids, Black - Walmart.com
Amazon.com: JOYMOR Ride on Truck with Remote Control, 4 Wheels 12V Battery Powered Kids Car, with LED Headlight/Horn Button/ MP3 Player/USB Port/Forward Backward/Kids Girl Boy (Blue) : Toys & Games