What does Buddhadasa say about rebirth after the break-up of the body?

i came across the teachings of Buddhadasa, he seemed to preach that rebirth is just a state of mind cycled throughout the days; greed, lust, peace, etc. That makes sense. But did he talk about what happen after break up of body or conventional death? Am i missing something? so if that is true, then eventually everyone will reach Nirvana at the end if we wait long enough (because according to him, there cant be cycles of state of mind if there is no rebirth)? Did he present new idea of of rebirth or I still have a lot more to read from Buddhadasa? I can't seem to find his ideas of literal rebirth. Thanks.