Laser tanks aren't just a sci-fi concept — they're very much real, and prototypes have existed since the Cold War era ... the "Sangvin" (Sanguine). This prototype utilized the chassis of ...
The M1 Abrams MBT may be more widely recognized today, but back during the Cold War the M60 Patton ... s new T-54/T-55 medium tanks, the U.S. began work on its own XM60 prototype.