Various countries have put deadlines in place for eradication or severe limitation on internal combustion engines. While most are betting on battery powered EVs, including Volvo for its autonomous truck line, Hyundai is opting for hydrogen fuel cells to generate the electricity required for long-distance, high-torque applications such as trucks. Trucks need to maintain high utilization rates to be economically viable. Frequent recharging stops don't work in this scenario. Fuel cells can be recharged relatively quickly and so work better for trucks. There does need to be recharging infrastructure though, which is costly and complex. Hyundai is not solely betting on hydrogen fuel cells though, as affiliate company Kia is also planning a full range of battery EVs. –Peter Richardson