Originally posted by Kazenji
Been reading the Combiner Hunter's book, When did Arcee use a space bridge to get to Cybertron during this time?most of the time she was back on Earth.
Space bridge is near-instant travel. Just before CW, Prowl gets the bridge, and in CW he uses it to travel quickly to Cybertron, but that end is still there.
Anyone on the Earth team can now use it for pretty easy back-and-forth travel.