There is however no final decision on wether you will be able to own a hoverbike or if you just rent them. Theese are the more combat oriented vehicles that Reakktor have told us about. As a wealthy clan or an extremely rich player you can buy a tank. The tank requires a pilot and a gunner, so you'll need teamwork to use them efficently. This means tank wars are most likely to be between rivaling clans.
Tanks are really expensive so they are pretty much for high level gamers.
We also know that there will be some kind of hover style dune buggys in the game. More info on vehicles will be uploaded as soon as Reakktor releases it.