Kais86 wrote...
Yeah that was their fault those guns were horrible, I've never seen such high caliber weapons do so little damage to anything, ever. What is really weird is that by the end of the series they could just simply shoot the bugs and they would die, it's like the bug armor got weaker, they didn't state that they were using better ammunition or anything, and the guns looked the same, so it is safe to conclude that some moron gave them duds at the start of the series.
or it could be, ya know, plot device.
http://tvtropes.org/pmwiki/pmwiki.php/Main/LoweredMonsterDifficulty
No, seriously we would just stick to vehicles that work, having your power cord cut by ambushers and then being rendered useless is not economical in any way otherwise we would already be doing it.
we don't do it now because we have nothing that needs it. An aircraft carrier holds its own nuclear reactor on board, but only because it can fit it.
Besides, anything with a power cable would obviously be used for base defense, not offensive capabilities.
Vehicles that work? Well then scratch mecha, since 95% of them run on either Minovsky physics or Black Box technology. Unless an alien ship crashes that we can reverse-engineer, we can't produce what mecha can do with what can be found on earth. If we had alien technology, then yes, maybe even Super Robots that ran on the pilot's courage and willpower would be possible. Mecha isn't science, it's psuedo-science.
Of course, no group could ever get a military contract for shit like this, since the military would be much more interested in simply buying missiles that can hit the target from the other side of the planet and can level a city.