Tesla: FSD, Cybertruck, Semi, Optimus and the spandex dancing man, solar shingles, solar farm, thermonuclear explosion proof glass, bullet proof chassis, battery-swap, range under full charge, share value, etc
Boring Company: Hyperloop, Not a flamethrower, Vegas loop, pods, tunnel bricks, etc
SpaceX: Martian colony, surface to surface starship, in-orbit refueling (to get to moon), in-situ methane production on Mars, etc
Neuralink: Telepathy, Brain backup
Twitter: Free speech
Musk himself: His net worth, The man who knows more about manufacturing than anyone else alive