Gravcars are the standard personal vehicles of most TL4 worlds, though most lower-class citizens rely on public transport in urban areas. Most advanced worlds have planetary transit grids that allow occupants to simply code in a destination and let the car take them there. On worlds where a lack of infrastructure or hostile local conditions preclude such convenience, manual controls and Pilot skill can be used.
Vehicle Weaponry
Most vehicles larger than a motorcycle or hovercycle can mount some kind of integral weapon. Gravcars can mount one weapon.
Heavy weapons take up more space than ordinary ranged weapons, and each such system takes up the space of two lesser guns. (Not possible on Gravcars).