I played the alpha for many hours and I noticed the people on bigger maps would just keep taking the big vehicles and stay on them all game. The only way I manged to stop it is by using a rocket launcher, using "Super Charged", or getting the entire team to shoot at it. So I propose that maybe Bungie can implement some sort of hijacking or getting on top of the vehicles and smashing it. Just my thoughts.
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In addition to the supers snd heavy weapons as you have mentioned, turrents, well placed shots, grenades, and even other vehicles were all effective means of eliminating vehicles. I don't believe hijacking is necessary in destiny.