The war-chariot designed for Shiva was different. The Earth or Prithvi became the chariot with the Sun and Moon its wheels. Brahma was holding the reins. Mount Meru became the bow and the serpent Vasuki was the bow string. Vishnu was the arrow, and Agni was the tip of the arrow. Vayu was inside the feathers on rear of the arrow. All other Devas had their own places and forms in the chariot. Just as the cities aligned, when the Pushya Nakshatra positioned appropriately, Lord Shiva was about to strung the mighty bow, the Pinaka with the arrow, the Devas were overjoyed that Tripura was going to be destroyed because of them (because they were part of the war-chariot, without which Shiva cannot destroy).