Let's assume for a moment that we're not going to replace all of our weapons with lasers. Your mirrored rotating fog-encased vehicle looks like a pretty attractive radar cross-section to the missiles and tracking systems we still have, and which are still going to be developed.
Let's also assume that laser development does not stop at the first version. You've got the systems necessary to defeat our 50kw red laser? Congratulations, let's try it out against this 150kw green laser. Don't spend too much time working on the armor for that one before you see our dial-a-wavelength version that hits the target with 7 different wavelengths at varying power levels if the target can last that long. We call that one Roy G. Biv, and Roy loves looking at things. Oh, you have reflective armor that can handle any wavelength? How about this rail gun projectile that can track your reflective armor and make course corrections in flight?
That's what irritates me any time we're discussing the next weapons systems under development. There's always someone to step up and shit all over it like the defense is so easy and no one ever thought of that.
Oh, you have a missile that can shoot down an ICBM? Well, that's completely stupid. All they have to do is encase the thing in 30 meters of pillows, and your missile is useless. We already have the technology to land a craft inside a giant air bag on Mars, literally all they have to do is put that on an ICBM (they're completely interchangeable, you know, I've seen videos) and all you've done is waste tax dollars.
C'mon, man. Between the Navy's rail guns and laser weapons we're finally getting into Freespace 2 territory. I know that any nerd like myself who played Freespace found themselves chasing a stupid little Shivan Dragon or Manticore or something that's dodging all over the place with your shots going everywhere except where the enemy is, and you're thinking that all you need is a laser and a computer to aim it. And then Freespace 2 comes out and you start yelling "THAT'S WHAT I'M TALKING ABOUT!" We're finally entering the age of general-purpose destructive directed energy weapons and there's no shortage of people who are going to step up and talk about how it's useless based on research that was conducted decades ago when the weapons themselves were impractical. It's 2017, the Navy is fielding these weapons (and no doubt developing their own counter-measures), and you're trying to use a program that was cancelled in 1993 as a reason why it's not going to work. Let's assume that the people working on the weapons are aware of SDI, and while we're at it let's also assume that SDI is about a hundred years down the road for people whose major capability is trying to field a swarm of small vehicles.
Basically what I'm saying is that this is badass, and I'm looking forward (in a technical sense, not a humanitarian sense) to the battlefield videos that show a laser system defeating any number of vehicles, with support from our existing arsenal of more conventional weapons and vehicles. Like I said, with most warfighting my interest in this is purely technical, I do not envy anyone who has to fire this or come up against it in a battle situation. Game-changing weapons like these tend to suppress war, when you have a division of tanks that each have a laser on them capable of destroying incoming anti-tank rounds, so that your tanks can't even get shot, then the game changes. Years ago we saw videos of laser systems detecting, tracking, and destroying incoming mortar rounds. This is great technology, this is the kind of weapon that saves lives.