I noticed that tank tracks are currently indestructible, or rather the suspension is. Wheeled vehicles will destroy their tires if the wheel hits a hard surface along the horizon, however falling from a height does not appear to damage the vehicle in any way. Likewise the driver does not appear to take damage unless on an open vehicle such as the quad bike.
I discovered this with a bit of silly (yet very fun) driving around aimlessly in the airport at high speeds..I think the videos speaks for theirselves.
http://www.youtube.com/watch?v=KOcUE6buWjU tank
http://www.youtube.com/watch?v=S_i0DLWd3WU&feature=youtu.be wheeled
In all honesty I'm not sure if I want to report this one, the authenticity says yes but the fun factor is saying no so..your choice.