So I made a scout tank. The outside is a bit yucky-ewwy-me-no-likey but the interior is nice. It has decent speed, can move on water, and has five seats (Driver, asst driver, gunner, loader, commander) plus three more that leave you partially out of the hatch for better view, but if you use they while someone is already in the buttoned-up seat it might obscure their vision. Screenshots here!
Outside views:


Top view with hatches

Positions for drivers
Inside Views - Drivers
Driver viewport

Looking backwards
Inside views - Turret
Loader's seat

Gunner sight

Commander seat, looking straight

Commander seat, looking at gunner

Commander seat, looking at radio shit

Commander unbuttoned seat

Yes, you can