A driver on a flat dual carriageway keeps speeding up to 90 km/h and then coasting back to 70 km/h. What does Goal 1.3 say about that style?

1. It is ideal because inertia is being used
2. It is required so the tachograph shows 'availability'
3. It fights the listed habits of stable speed and smooth control and raises fuel use
4. It is the only legal way to use an automatic gearbox