Looking at that pic I'm not sure that what she hit was a lift gate of the type used to put cars on the top of the truck. If you look you can see swing out doors. Trucks with lift gates don't have swing out doors (at least not the ones that I have seen in the US). I'm thinking that was a "normal" cargo truck, one with the floor about 4 feet up or so. And it had a stationary aluminum ramp from the floor to the ground, sticking out about 7-8 feet past the back of the truck. The car then hit somewhere in the middle such that the nose went under the ramp. Then as it kept going forward, the nose funneled the ramp right at her. At least that's how I interpret the picture, but I could be wrong.