A nod and the glovebox

These are Find a Drive's own two buttons, running here on a drive made up for the purpose. Nothing's kept, so press away.

The nod is drawn as the back of a right hand on top of a steering wheel, thumb round the rim. Press it, and the index finger lifts, the wave drivers give each other on a narrow road; the hand fills in, and three short strokes flick off the fingertip. It's only ever the one finger: seen from the back of the hand, two raised fingers say something else entirely in Britain.

The glovebox drops its lid, takes in a folded map with the route drawn on it in your colour, and shuts. With a drive inside, it's filled in solid, its latch lit in your colour.

Each was set beside the alternatives. A nod drawn as the steering wheel tipping was simpler to draw and easier to read small, but any driving app could have had it. A plain Like and Save needed no explaining, but gave you nothing to remember Find a Drive by. Then we played them at a quarter speed, pressed them in a hurry, and pressed them again halfway through.

That's how we caught the map drifting a little further left with every press. GSAP, the animation library that moves them, works out the point a thing turns about from where it is at the moment it's told, and the map was being told again halfway through its fall. Now each pivot is set once, before anything moves, and the map stays put.