The futuristic Starline high-speed train concept, dubbed the “Tube for Europe,” aims to transform travel with metro-style routes across the continent. Promising speeds of 250 mph, it could cut travel times drastically—Helsinki to Berlin in just over three hours. The sleek, deep-blue train will feature AI-driven security, social spaces, and no class divisions. Proposed stations will serve as cultural hubs with museums and concert halls. While still a concept, Starline could mark a new era in European rail travel.