Surprised that this one hasn't been posted yet:
"Lockheed Martin’s [NYSE: LMT] 30-kilowatt fiber laser weapon system successfully disabled the engine of a small truck during a recent field test, demonstrating the rapidly evolving precision capability to protect military forces and critical infrastructure."
Turning Up The Heat: Latest Evolution Of Lockheed Martin Laser Weapon System Stops Truck In Field Test
http://www.lockheedmartin.com/us/new...ena-laser.html
Lockheed Martin Media Release
March 03, 2015
Lockheed Martin's laser can stop a truck from over a mile away
http://www.engadget.com/2015/03/04/l...r-athena-test/
Engadget
March 04, 2015
Early heavy lasers were fired from fixed emplacements. It was a number of years before vehicle-mounted versions became practical.