Henry is all sorted. He’s got a shiny new MOT pass and some not-shiny new wheel bearings. Wheel bearings aren’t meant to be shiny. The old ones were very shiny, hence the noise.
Sammy is growing some ant-powered new tendrils/fronds/arms/legs/branches/stems.
Annoyingly, the irritating fungus gnats that Sammy was bought to dispose of seem to know to avoid Sammy. Perhaps all the dead ants are a dead giveaway.