having some kind of vehicle would be nice. and there would be obvious limits like transport capacity. and they would be expensive to make. it is kind of odd you have space ships but no land/air/sea vehicles. i would recommend 3 tiers.
- T1 a simple cart than can be pulled by animals like Cow and muffalo reliable, long range but slow.
- T2 a truck like op suggests faster, reduced range but has problems with some terrain and needs fuel.
- T3 a hover car/speeder very fast on every terrain, short range. hard to repair needs power minimal cargo space.