The global truck making industry is facing the challenge of transitioning to zero emissions, with electric batteries being unsuitable for long-haul freight operations due to weight and charging constraints. To address this, truck manufacturers like Volvo and MAN are turning to hydrogen combustion engines as a more feasible and economical alternative. Although hydrogen fuel cells are also being developed, the immediate focus is on adapting existing combustion engines to run on low-emission hydrogen. Despite concerns over harmful emissions and the need for larger pressurized tanks, companies are investing in developing this technology. The scarcity of green hydrogen remains a significant hurdle, but initiatives from the EU and the US, along with industry partnerships, aim to address this challenge. While the rollout of green hydrogen infrastructure may take time, truckmakers are making strategic moves to bridge the gap by offering combustion engine models that can run on natural gas or biogas as an interim solution. This transition strategy allows for a gradual reduction in carbon emissions and provides a familiar technology for fleet customers. Overall, the sentiment towards hydrogen combustion engines in the trucking industry is positive, with stakeholders seeing it as a key step towards achieving sustainability goals.