This option can be overridden if not applicable/semi impossible, can be replaced by giving 80% damage resistance to the vehicle.
I used to be a cop and I tried this vehicle many times but it didn't end so well for me, Beside all the fire arm of this vehicle the speed is bad, So i'm suggesting to increase the speed but teargas will be op in my opinion so either you update only the speed or both but it have to cost at least 1k each grenade for the one who is shotting with it so I am kinda Positive with this one, This car needs fix indeed.
adding all these stuff will be more op specially for a 200k car only made for cops however adding 3-4% of damage resistance and increasing the vehicle's balance plus to the teargas cans it could be much better in my opinion it will be balanced from all directions, also let's not forget that it's a tank or how it's supposed to be.
Don't you think that shooting tear gas from a swat tank would be kinda op? I can't find where you mentioned a cool down for it so it will be same as normal tear gas cool down?
The cost of the S.W.A.T. truck is 600k and I'm not suggesting more damage resistance for it, I suggested giving it the ram ability of the Dune.It will be 5 seconds, like normal teargas cooldown for on-foot officers. although I will leave the new cost of the vehicle up to administration, but preferably 2M+ for the features it will contain.