Possable units?

[Civmaniac]

I came up with 3 cool units. Will it work?

1.Harvester - Supplies Food/Production/Trade from it's current square to it's home city

2.Armored personel carrier - Holds units to transport them quicky across land

3.SAM missles - only attacks air units
(Perhaps Sub disadvantages w/can attack air units?)

[Shadowstrike]

The first two units you suggest already exists in Alpha Centauri. Your first unit is known as a Supply Crawler. The second is made when you put a troop transport on a rover/infantry/hovertank chassis. If you don't have AC, you might want to get it, it's almost like sequel to Civilization 2.