I see, I see the car designed By Brahmá’s own creative mind, The car which, radiant as the moon, Moves at the will by Brahmá’s boon; The car which once was Rávan’s pride, The victor’s spoil when Rávan died.

In plain words: Hanuman sees the flying chariot coming. The god Brahma designed it, and it shines like the moon and flies wherever its rider wishes. It once belonged to Ravana, the demon king, and Rama won it when Ravana died.