One of the most accepted-as-everyday developments in new-car technology is ABS, or a car’s anti-lock braking system. It’s been around since the ’90s, though wasn’t considered mandatory equipment on ...

If you’ve ever tackled the 193 steps at London’s Covent Garden station, or heaved an overpacked suitcase up the winding staircase of a charming-but-stubborn Italian Airbnb, you’ll know just how ...