Well, maybe not exactly, but mad.max was kind enough to point out on our forum that according to the PC Gamer (UK) article on Halo this month, passengers in vehicles will be protected from damage even if vehicles are destroyed:
Bungie are deliberately NOT making them deathtraps. If a vehicle is destroyed then all the passengers will escape unharmed, with only the driver suffering damage.
Got a thought on this? Go and read the thread.