This also occurs with supply convoys. I was taking off and a co-country man infront of me got run over by a supply convoy, he exploded and I was lucky enough to pull up just in time to miss the trucks. I might add I had quite a bit of a laugh out of it also, as I found the situation rather amusing.
One more thing I should point out is that when you shoot down a bomber in close range, the remaining ones seem to warp into a different position. If you are unlucky enough to be at a wrong angle/position during the warp you suffer a collision and death.
