Investors have been patiently waiting for Nio (NIO -4.21%) to post explosive delivery growth for years now. The Chinese electric-vehicle (EV) maker has reported strong numbers, including eight consecutive months of deliveries topping 20,000 units, but the figures remained stagnant through much of 2024.The good news is that if December is any indication, 2025 could finally bring the delivery that growth investors have waited to see. But will it be enough to send Nio's stock, which shed over half its value in ...