B1A4 CNU revealed that it's their first time riding a KTX (Korean Train eXpress). On June 8, he uploaded a photo with Jinyoung and wrote,
"It's the first time for both of us ridign a KTX hehe how can the world run this fast!! Anyway we're heading to Pohang~!!"
In the photo, CNU and Jinyoung are having fun while on the ride and Jinyoung even made a pouty face with CNU's big smile behind.
Source: CNU's twitter