No, cars/vans generally will land front-first or on the roof. This is due to the fact that once the front-end of the car starts going over the edge, a [torque](http://en.wikipedia.org/wiki/Torque) (due to gravity) induces a rotation on the vehicle. Most highways and bridges around are small enough that the car/van can only rotate a quarter or half turn (which corresponds to the front and roof respectively). There are some bridges in the US that might allow for a full rotation due to it's height, but the fall would certainly kill you (regardless of your buckling yourself) due to the sudden stop at the end (see [this question for more on that](https://physics.stackexchange.com/questions/145022/high-speed-does-not-kill-does-acceleration-do-it-or-jerk)).


[This link shows the *actual* attempt at the fall](https://s1.yimg.com/bt/api/res/1.2/dLHcNKRv7pRT0oJ.7m8lDA--/YXBwaWQ9eW5ld3M7cT04NTt3PTUwMA--/http://l.yimg.com/os/publish-images/tv/2014-11-17/2e93d520-6e8a-11e4-9a3c-3d5c0d0d07dc_Van-Drop-1.gif). It falls precisely as stated above: the engine pulls it down and it lands on its back. The screenshot below shows the first attempt at the fall. 
![enter image description here][1]
([source](http://comicbook.com/2014/11/17/the-walking-dead-why-daryl-and-carol-would-have-died-in-that-van/)).

So the production crew used [a crane to drop it vertically](https://s.yimg.com/bt/api/res/1.2/C6R2il2HZBC_kf3xrKJXwA--/YXBwaWQ9eW5ld3M7cT04NTt3PTUwMA--/http://l.yimg.com/os/publish-images/tv/2014-11-17/530387c0-6e8a-11e4-8978-e38d20fca59a_Van-Drop-2.gif). Chalk this one up to movie magic.


  [1]: https://i.sstatic.net/X5AAY.jpg