Last summer, I found myself sitting at a bustling café in Berlin, nursing a lukewarm latte while absorbing the lively chatter of the patrons around me. As the sun dipped, a group of friends exited, laughter echoing as they fumbled with car keys. Moments later, I witnessed a surreal scene: one friend stepped up to a sleek electric vehicle, inhaled deeply into a small handheld device, and only then was he cleared to enter the driver's seat. Intrigued, I sat there, watching the technological intervention that stood between him and the potential chaos of impaired driving. It occurred to me that this isn’t just a quirky trend but rather a vital component in the landscape of road safety.