Technology: Gaven's Vehicle

I am currently brainstorming some of the technology that will be used in the book. I may, at some point, post what I already have. But for the time being, I'll keep moving forward. Gaven is the 'handyman / survival guide' that is often used by Naeva's branch of the government's science panels. He has a vehicle that is very rugged, capable of traversing various tough terrains.

At the moment I am taking as inspiration those tough, armored police transport vehicles. They are completely armored, small slits for windshields. Their front ends angle forward from the bottom and they have about six wheels. Gaven's car will be shaped like that, and armored looking like that. But it will hover, wheels are not very practical for thick jungle and various other terrains. It is more like flying, because the vehicle will be a meter or so above the ground. The engines that allow this are antimatter 'jets'. Its primary fuel is rubbish that has been processed into a gaseous state. This is misted onto an antimatter sheet (I haven't thought out how this would not simply implode yet) causing an extremely hyper reaction, described as a crackling. These engines are rotated and adjusted automatically, but can be overridden for whatever reason. The vehicle is stable enough to survive attacks from even very large animals.

On the right side of the vehicle is a large window field bubble, used for navigation in low visibility situations.