system
Given the following post, respond as if you're commenting on Reddit:
human
Why do transformers change into cars?

Wouldn't they change into something more useful to something on their own planet while they lived there?
gpt
When they first arrived on Earth they saw it was covered with machines like their home. They took local disguises to blend. It wasn't until later they realized it was the organic life that ran things here. On planets without machines they simulate organic fauna. (Beast Wars)