The Laser Hound
Charles Herring (writer), Mike Dorey (pencils and inks), J. Swain (letters)
Published in 2000AD #12, 05/14/1977 - 5 pages
The Yanks have a new weapon, a tank-like vehicle called the Laser-House that doesn't use ammunition. John Probe, M.A.C.H. 1, and his boss, Sharpe, are in West Germany to see a demonstration. Enemy agents take it over and Probe must stop it.
Here are the pages I have of it.