A saber is a large, speedy military vehicle with big knobby tires, armed with a gauss cannon and capable of holding four armored soldiers. It was used in the Guild Wars.
Some sabers were used as "saber command cars".
References[]
Dietz, William C. (April 6, 2010). StarCraft II: Heaven's Devils. Simon & Schuster (Gallery Books). ISBN 978-1-4165-5084-6