Sure, stations are big and ships (even the biggest ones) are just a fraction of the stations' size.
However. Speeds we are talking about are significantly higher than what the video shows. Nearly 5 times higher if we assume docking speed of 100m/s. Now, take a laden Conda (850000 kg, give or take) - its mass is 28.33 times higher than the mass of this truck. That Conda will hit the station with the energy of roughly 275350000 joules. That's not insignificant and definitely capable of dealing a lot of damage inside the station. I think even crashing a Sidewinder inside would cause loss of life and require lengthy repairs.
Ah, that's not considering things like potential explosives (ammo) on board of the ship. Also, whatever remains of the ship's power plant, will be radioactive (despite the power plants being nuclear fusion - based). Even in case of something as small as Eagle or Sidewinder, you get effectively a dirty bomb inside the station. Remember to add to it that any fire inside the station consumes oxygen.
Feel free to correct my maths, I'm not a physicist. But in general it seems that your truck analogy doesn't fit here. If Elite was to be kept super realistic, no station would allow any of our ships to dock without an automated and guided process. Most likely they would blow out of the black any ship getting too close without initiating automated docking. Now, I'm not suggesting Elite should be realistic, after all we are supposed to fly these ships, not have them fly us. But some dose of respect for realism certainly wouldn't hurt.
In a way you are right about the truck analogy, it would be for worse for the ship, but the truck is an every day object that people see and can easly imagine at 50mph.
Your math's is wrong if your using classic KE = 1/2m * v2 = J, where m is mass kg and v is speed in meters per sec, and the number would be much higher amount of Jules, however that also doesn't take into account how quickly something stops, thus the distance that energy is dissipated in, it only tells us its potential in the frame before it stopping, or in the instant after should it come to an immediate in ostensibly near zero distance stop, should it miss the letterbox at speed.
And what your failing to grasp is even the biggest spaceships given their size and mass even with the weight cargo are little more than tin cans, where much of the force would be absorbed within its self as it would crumple up and literally disintegrate, much like the old footage of an F4 phantom being fired into a ~650t concrete reactor roof sample at 500mph.
F4 phantom at ~480mph (~214m/s) vs. 10ft (3.048m) thick rector wall/roof outer test sample (free standing):
[video=youtube;RV_baW5OERY]https://www.youtube.com/watch?v=RV_baW5OERY[/video]
As for fire, one would assume that no one would be in the hangar without any backup breathing supply should any force-field like "door" fail, or need to be shutdown to vent oxygen to starve a fire in the landing bay, one would also assume the only people "air-side" are the ones designated to be there and trained in all manner of situations, a little more like the flight deck of an aircraft carrier than a bus or train station, the other more startling thing would be, why would you bother maintaining a breathable oxygen environment to such huge open area that serves little purpose, promotes fire, or could be lost if a force-field like "door" failed, when you could just use nitrogen and CO2 and other scrubbed gases from the living areas and mitigate waste and fire risk while still maintaining a more comfortable 1ATA/ATM, so your body hugging elasticated "onesie" undergarment isn't so tight fitting as it would be at 0ATA/ATM should the force-field like "door" fail, while your rebreathing apparatus would suply meny hours of breathing at both 1ATA/ATM or 0ATA/ATM.
The only real problem at the moment with how things work, is the lack of requesting to launch much as you have to request to land, and a more ordered system that tells you when to hold short of the door and when to carry on and your order through the door vs. other ships, as a docking computer to land you without the same system governing your exit is at best farce, likewise ANY automated system should have a very quick way to turn it OFF and should NOT be doing ANY maneuvers a human can't do, as that leads to unrecoverable situations.
Now lets take something from the real world, there are many commercial aircraft that at many major airports could land them selves in zero visibility, however most country's forbid that, because there is no way really for the pilots to see until its to late if there is a problem, which is why there is a decision height, if the pilot see's the runway, he takes manual control and lands, if he can't see the runway he executes a missed approach and go-around in much the same way as he would if he was to see an aircraft etc on his runway even though the tower has said its clear, or other problems.