New Vehicle idea: Truck with anti-air on the back

[tigeric]

I was thinking about the game while i was playing planet side 2 and it came to me that it was hard shooting down targets from a mounted AA gun When the aircraft you are shooting at fly's away so why cant we mount it to a truck? That way the aircraft's cant chicken away while shooting at them.

I was also thinking about riot shields in planet side 2 but a more futuristic version or a deploy-able defense wall that can take a certain amount of hit points.