RE: what if elon trapped grimes on mars leaves the solar system and makes me build the SEG to fly to mars to rescue her? And She's just been making art in an underground base to inspire me to Mars? And deepfake elon is her martian left over breakaway AI?

[fulltimegeek]

True, portals might work.

Regarding the shape of earth, I definitely don't think it looks like that (footstool aka Azimuthal Equidistant Map). But, we are indeed on a plane(t) tho ...