[umvi]

Plus reaching the speed of light requires infinite energy, literally. You have to settle on some small fraction of the speed of light, depending on how much mass and energy you have.

[dvh]

It's pointless to travel at speed of light to get instantaneous travel when you spend half an hour boarding rocket and 2h in traffic from the city to starport.

[gibolt]

And you have to stow your laptop for the duration of the instantaneous flight

[umvi]

It's only instantaneous for you. Anyone not on the light speed rocket will be dead by the time you deboard on the other side.