This paper presents the activities and early findings related to a Megawatt charging site within the German flagship project High-Power Charging for Long-Haul Trucks (HoLa). The paper combines results from early laboratory-based MCS evaluations with operational experience from the deployment of MCS charging infrastructure at the Shell charging hubs in Lehre and Wustermark. Initial technology assessments conducted on a climate-controlled heavy-duty chassis dynamometer investigated charging performance, thermal behaviour, communication reliability, and interoperability between prototype MCS vehicles and charging systems. Building upon these findings, real-world charging operation along the A2 freight corridor enabled the evaluation of charging power utilization, system reliability, and interoperability under commercial logistics conditions. The presented results demonstrate the technical feasibility of megawatt-scale charging for long-haul battery-electric trucks, including sustained charging currents exceeding 1,000 A and charging powers approaching 1 MW. Furthermore, the study identifies key challenges and lessons learned regarding communication standardization, thermal management, and multi-vendor interoperability. The findings provide valuable insights for future MCS deployments and support the ongoing standardization and commercialization of megawatt charging infrastructure for heavy-duty transport.