Explain in detail what Charlie means by his quote at the end of part one, “And in that moment, I swear we were infinite.” Why does he say this? What does it mean to him and his friends?

Charlie Patrick and Sam are driving through a tunnel in the city. The city lights and the rushing air makes him feel alive. Charlie feels “infinite” in this moment because he feels free, unencumbered by the social restraints of high school and his home life.