The Star of Friendship Forever (友情の星よ永遠に Yūjō no Hoshiyo eien ni) is the 37th episode of Ultraman Ace.
Seiji runs into an old friend, an inventor named Kashima who is working to make a car that can travel at Mach speeds. While Seiji is visiting, the terrible-monster, Machless, attacks a bullet train and a jetliner. TAC mobilizes to fight it, and after delivering a few hits, Machless flees underground.
- Ultraman Ace Volume 10 features episodes 37-40.