Enhanced Missile Version.
Drive around until you see something you don't like (like a bridge), aim the vehicle roughly in that direction on mostly level ground.
You can change the stance with VTOL controls, (normal stance best for high speed offroading).
To launch : Press and hold brake which is also missile thrust, press 1 to activate engine, wait until tires are dragging, press 2 to launch missile, use flight pitch controls, only minor yaw can be corrected, keep holding brake until missile flight is over.
Press 3 in mid flight to detach bombs, by default the missile body will pitch up into the top bomb setting off a ring explosion.
F5 is missile camera. 8 is toggle body twist rotator.
When the vehicle is empty you can hightail it out of the area as it can handle most offroad conditions at full speed. Use the Roll and Yaw on the same side to swing the end around like an e-brake turn. 4 to enable gun pitch and roll.

Perfect starting point location : Tundra Wasteland in Snowstone Area. Turn 90' to the right, arm the missile and get lots of thrust built up, launch over the hill and try to hit the SAM base. Right when you are about to hit press 3.