Tesla is expanding its green initiatives with a significant $3.6 billion investment in Gigafactory Nevada at the Truckee-Reno Industrial Center. The expansion includes a 100 GWh 4680 Cell Factory for advanced batteries and a High-Volume Semi Factory for their new electric trucks. This move is targeted at addressing the 18% of U.S. vehicle emissions contributed by combination trucks. On the other hand, Nikola has seen success in selling 72 units of its Class 8 Hydrogen Fuel Cell Trucks, surpassing their Q2 sales target. The company's CEO, Steve Girsky, expressed excitement over meeting their goals and securing new customers like Walmart Canada. The article delves into the competition between Tesla's all-electric Semi trucks and Nikola's hydrogen Class 8 trucks. While both companies aim for zero emissions, they differ in their power sources. Tesla's infrastructure and charging advantage through its extensive supercharger network and advanced battery technology are highlighted, giving it an edge in energy efficiency. Despite the differences, both Tesla and Nikola are making significant strides towards achieving net zero emissions in the transport sector. The article concludes that customers will soon have the choice between all-electric and hydrogen-powered trucks, with both companies poised for success in the clean transport market.