Electric cars make no sense.

Reusable rockets make no sense.

Autonomous cars make no sense.

Data centers in space make no sense. <--- You are here.

Humanoid robots make no sense.

Hyperloop: makes no sense

Solar roof tiles: makes no sense

Lot's of tiny tunnels under cities: makes no sense

Performance of the new roadster: makes no sense

All four of the above were likely scams. Musk is not beyond running a scam.