Why does the Torah refer to the gift of wagons as "Korbanam"?
Ramban #1: Because the Nesi'im brought them for the needs of the Korbanos. 1
Ramban #2: Because they contained the Korbanos that the Pasuk lists later in the Parshah. 2
What are "Eglos Tzav"?
Rashi #1 and Targum Onkelos: "Eglos Tzav" are covered wagons.
Rashi #2 (in Yeshayah, 66:20): They are wagons well rigged-out, with walls and a cover.
Ramban #1: "Eglos Tzav" means 'large wagons'.
Ramban #2: It means 'full wagons'. 1
Rashbam: Wagons that were ready to go to war and travel long distances. 2
Targum Yonasan: Covered wagons well rigged-out.
Why did the Nesi'im donate a wagon between two Nesi'im?
Seforno: It was a sign of the camaraderie that existed between them, rendering them worthy of the Shechinah resting among them. 1
What are the implications of "Vayakrivu osam Lifnei ha'Mishkan"?
Rashi: It implies that they brought their gift to before the Mishkan, but Moshe did not accept it, until Hashem instructed him to do so
What prompted the Nesi'im to come forward with their gift in honor of the Mishkan?