Air Transportation

[Cronos_Cross]

I may not be the first one to think of this, but noticing that they already have air AI worked out with the drones, how hard would it be to make a helicopter or anything similar to that using similar mechanics of the drones to fly over structures, this could add another use for rockets so that these helicopters can fire "missles" (rockets) and machine gun ammunition and using 2 fuel inventory slots like the tank; and this vehicle would allow for more technology ideas to sprout up, and being a helicopter, it can fly stationary unlike an airplane. And this can even be automated, you could build something similar to a control tower next to a helicopter pad of some sort, and if the pad is occupied the control tower will single incoming vehicles to circle around landing zone until it frees up. This form of travel or item transportation may not be the fastest, but it would allow going over water.

And the alien spitters and worms could be your main concern, seeing as in then can shoot acid at the player, they will simply shoot acid at the helicopter, adding to the danger level of being in the vehicle.