“Up to 37mph” isn’t really motorway speed, so I imagine most hands-free driving would be around town.
At 30mph a car covers 44ft/second. If it takes just 2 seconds to react and put hands on the wheel + foot on the brake the car has already covered the length of 2 buses.
Q: Hands-free driving and Smart Motorways – Exactly how are they making our roads safer?