Given how busy 'Infinity Challenge' cast members are it's a perfect fit for them to endorse the energizing Coca-Cola soda brand.  The group brings their natural chemistry and wacky antics to a new CF just right for the hot and humid months of summer.

Five members, Yoo Jae Suk, HaHa, Jung Hyung Don, Park Myung Soo, and Noh Hong Chul grab a few sweltering students and take them on a refreshing Coke-filled water ride around the city. Leaving just one question, where is Gil and Jung Jun Ha?

The quintet have been making a splash with their recent 'Coke Song' CFs as well, posted below if you missed them.