[EOT]

Yes you've got a point about the power requirements. This kind of weapon would be better suited in a fixed position. The Patriot Sam's use alot power as well, the game assumes the Radar,Masts,Control station, Power plant are are in a fix position off-map somewhere. The Electric Power Plant (ECP) has two 150KW diesel engines to help power generators.

A 1KW laser weapon mounted on a vehicle was demonstrated destroying IED's successfully and a moving fastboat in the link's article. (Toaster Power)

There are probably simpler mods that could be done to the game than laser weapons. I can see laser weapons being common use on vehicles 20 to 25 years into the future.