One way is to replace a component of the high voltage busbar with braided tape, which keeps the flat configuration but is too flexible for automated assembly.
Another approach is to replace a component of the high-voltage busbar with sheets of conductive material, and then stack the sheets. This approach provides a degree of flexibility in one direction.
As with any electrical and electronic device, the current flowing through the high-voltage busbars generates electromagnetic radiation that can interfere with the electronics in the vehicle. As high voltage busbars continue to evolve, so must the shielding options available.