App 2.50.0: the Caterpillar crawls while you drive

A hump runs from the tail to the head, lifted feet swing forward while
the others stay planted, and the branch it walks on slides by with the
speed. Parked, it settles into its high arch.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LhzAVaUyqcw5PkGjz4mWW6

THEMES.md

@@ -311,7 +311,9 @@ tissue colours on the book's night page. The caterpillar arches over the middle,
 the book's cover: overlapping chunks of mottled green paper with a yellow fringe along the back and
 olive feet, and a red-orange head with a yellow face, green eyes and purple antennae. The face
 carries the speed, and its ten segments are the power, lit from the head backwards while drawing and
-blue while regenerating; its back humps up and down while you drive. On the left the sun is the battery,
+blue while regenerating. While you drive it crawls the way a caterpillar does: a hump runs from its
+tail to its head, the feet it lifts swing forward and the others stay planted, and the branch it
+walks on slides by, faster the faster the car goes. Parked, it settles into its high arch. On the left the sun is the battery,
 filling with the charge; below 20 % it turns into a grey moon and "BATTERY LOW" blinks. A big leaf
 above it holds trip, usage, climate and odometer on paper labels. On the right a clock in a paper
 circle, and the story's fruit, one apple, two pears, three plums, four strawberries and five