Lyric discussion by phlyme2themoon 

Cover art for Cassidy lyrics by Grateful Dead

The first verse is about Bobby's kid, Cassidy, the second is about Neal Cassady, "Lost now on the country miles in his Cadallac", Cassady was well nown for his savant-like driving ability. Bobby wrote this song well after Cassady died, it was written as a tribute to his life and his newborn child.

Cassidy Law is not Bobby’s daughter.