Aircraft sitting on the tarmac doesn't have to take off if it has been shot at. In the process of taking off could be more of a problem, I suppose. On the other hand, at least airports are a relatively small area to keep secure.

Presumably the Hyperloop isn't actually in danger when shot at. The cars just slow down when depressurization occurs. Thought I read that somehow.

I responded to concern over the Hyperloop shutting down for hours whilst the damage is repaired.

And, if someone fired a few pot shots into a taxing A380 at LAX, I have to imagine that the whole place would be shut down for a few hours.

Airplanes leak so much air that a couple more half-inch holes would not affect overall integrity. Most control systems are implemented with redundancy, so taking out a control point would just failover to a backup. Occupants aside, there little such damage could do to an airplane; noting the occupants, worst case is a couple casualties, not loss of everyone on board. And, of course, you could simply choose to not take off.

As mhandley noted, Hyperloop might be more susceptible, as the concern is more like your airplane flying an inch off the ground and hitting a stationary large brick.

...which reminds me of an old analogy: Back when large-capacity (ooh! 10MB!) hard drives were becoming common, I recall hearing the comparison that the read head was akin to a 747 traveling Mach 3 just 1 inch off the ground. Perhaps Elon wondered how this might work in real life, and so came up with Hyperloop.

Aircraft are actually supposed to leak air. In non-bleedless aircraft, the engine compressors pressurize air to be used in the A/C unit, which then sends all the pressurized air throughout the cabin. To prevent excess pressure buildup, valves are opened partially most of the flight with a veinlike network of tubes venting air to the exterior of the aircraft.

Of course, if any damage occurred on the ground, this would be a non-issue entirely as the aircraft wouldn't be pressurized at all.