Futurology

Perhaps Hyperloop was doomed from the start. It was aiming for near 100% vacuums. These are exceptionally hard to maintain. Partial vacuums, where 98-99% of the air is removed, are much more feasible.

Isn't this also the one that was supposed to seamlessly ferry cars in individual pods? That sounds like a bigger practical problem to me.

Modern passenger jets are about as good as we can do in air - you go any faster, and you break the sound barrier causing massive drag and cost. They're about as streamlined and efficient as they can be at cruising speed, too. Removing air is just the logical next step, if it can be done at reasonable price given returns.