Nio has reported significant year-over-year increases in vehicle deliveries, with a 62.3% gain in May and a 22.8% increase in April. The company's deliveries have been rising, with May's total contributing to a cumulative 1,148,118 electric vehicles delivered. The momentum of Nio's deliveries is being closely watched, with some outlets questioning its impact on valuation and others noting the company's orders are beating those of Tesla in China.