Comic Title: Green Lantern #52
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: April 1967
On Sale Date: February 23, 1967 Newsstand Date February 23, 1967
Source: Direct Currents, Superman #195, Page 25

Copyright Date February 23, 1967
Source: Library of Congress, Periodicals 1967

Newsstand Date February 23, 1967
Source: Newsdealer Magazine, V22 #1

Frequency: Monthly, with the exception of Feb., May, Aug., and Nov.
Cover Price: $0.12
Page Count: 32
Editor: Julius Schwartz

Title: "Our Mastermind the Car"
Pages: 23

Feature(s):
Green Lantern (Hal Jordan of Earth-1)

Writer: John Broome
Artist: Gil Kane

Reprinted In:
Crisis on Multiple Earths:Team-Ups Vol. 2 TPB (2007)
Showcase Presents Green Lantern Vol. 3 TPB (2008)
Green Lantern Archives Vol. 7 HC (2012)
Green Lantern:The Silver Age Omnibus Vol. 2 HC (2018)

Feature Character(s)

• Green Lantern (of Earth-1; in flashback; last appearance in Justice League of America #49; next appearance in Green Lantern #49)

Guest Star(s)

• Green Lantern (of Earth-2; in flashback; last appearance in Green Lantern #45; next appearance in Green Lantern #61)

Supporting Character(s)

• Tom Kalmaku (last appearance in Green Lantern #49; next appearance in Green Lantern #53)
• Guardians of the Universe (in flashback; last appearance in Green Lantern #47; next appearance in Green Lantern #51)
• Terga Kalmaku (last appearance in Green Lantern #48; next appearance in Green Lantern #53)

Villain(s)

• Sinestro (in flashback; last appearance in Green Lantern #18; next appearance in Green Lantern #74)
• A gang of unnamed criminals (in flashback; no further appearances)

Guest Appearance(s)

• Doiby Dickles (in flashback; last appearance in Green Lantern #45; next appearance in Infinity Inc. Annual #1)

Other Character(s)

• Princess Ramia (in flashback; last appearance in Green Lantern #45; next appearance in Infinity Inc. Annual #1)

Cameo Appearance(s)

• Green Lantern Corps (envisioned in the thoughts of the Guardians)
• Katma Tui (envisioned in the thoughts of the Guardians)
• Tomar-Re (envisioned in the thoughts of the Guardians)

Comments:
This story takes place before Hal Jordan left Coast City in Green Lantern #49.

Synopsis:
Alan Scott travels to Earth-1 to visit Hal Jordan. Alan wants to send Doiby his old cab Goitrude as an anniversary present. Hal Jordan has kept the cab in his garage while Doiby has been offworld. However, when Hal goes to retrieve the cab, it is missing.

Goitrude seems to have taken on a life of its own. The cab begins aiding criminals and speaking. Eventually the Green Lanterns summon Doiby back to Earth, in hopes that he may be able to control the car. Instead, the car uses the power contained in both the Green Lanterns' rings. With this energy the true source of Goitrude's sudden behavior is revealed, Sinestro.

Sinestro paralyzes the Green Lanterns and Doiby. He then uses the device Doiby used to travel between Earths to steal the Master Power Battery on Oa. He transports the battery to Earth-2 where he plans to create an army of evil ring-wielders.

Hal and Alan manage to break out of the paralysis. They transport themselves to Earth-2 and defeat Sinestro's army. The Power Battery is then returned to Oa in the Earth-1 universe. Before Doiby returns to his wife, Alan creates a miniature replica of Goitrude for Doiby to take with him.