I.O.I's hit song 'Suddenly,' released in May to commemorate the group's 10th debut anniversary, has been identified as the most played song in cars during the June and July vacation season. According to KT Genie Music's analysis of in-car streaming data, 'Suddenly' ranked first, followed by ILLIT's 'It's Me' and ATEEZ's 'Paradise.' The emotionally resonant track, which captures feelings of nostalgia and longing, topped Melon's Top 100 and has consistently maintained its position in the top rankings. This demonstrates strong popularity on the car streaming platform and shows the song's emotional appeal to vacation season drivers.