Disabling Anti Riot trucks

I believe if the blades of these trucks which I assume run on hydrolic fluid could be made to completely rest on the ground, the trucks would have a hard time moving without tearing up the street... Any ideas??

This may be a case where the insulation foam could lock up the blade...

I hope more people will join your thread. Meanwhile some ideas were discussed here too that might be helpful.

http://iran.whyweprotest.net/news-c...d-anti-riot-vehicles-supplied-iran-china.html

Thanks for the info, Negargar!!

I think its a important info. Thanks for share