The Torah repeats the story of Eliezer selecting Rivka. Rashi (Bereishis 24:42) says that we learn from this that the conversations of the servants of the Avos are better before Hashem than the Torah of their sons (because many details of mitzvos are only alluded to in the Torah).
The same Rashi also tells us that the ground “shrunk” for Eliezer to allow him to arrive on the same day that he departed (as alluded to in the passuk).
This episode analyzes each of these points in Rashi and discusses the connection between them.