Reminds me of the ZSU-23 (the Gun in VN) or the 2S6 later update except its on a truck body.
Added missiles to replace the guns for the +30K altitude shots. Guns for low altitude.
Kinda like a cross between the 2S6 and a SA-15
I became familiar with the ZSU-23 while stationed in Havana (93-97). Every time there was a flap, the Cuban Air Defense
Forces would deploy ZSU-23 (SHILKA) units to the beaches near my house on First Avenue. I ran up and down First Ave, very close to them. They got excited when I got too close to them, trying to scope out any unit markings.