announced so could this be a buying opportunity or is the stock selling off for a good reason craig knightyzon motors, to learn more about his prospects and business welcome to "mad money. >> thank you, jim, it's nice to be here. >> all right, so, we have had a tough week with some of these stocks in your group they shouldn't ul be lumped together they're all very different companies. but i want you to tell our viewers about this is not one of those pie in the skies you actually have vehicles that work and are in some ways economic >> indeed. so, you're right, jim. hyzon has recently started assembling trucks and buses and the truck in the virtual ride along we did in europe recently was powered by the same fuel cell designs that have been supplied by the parent company for hundreds of commercial vehicles, deployed mostly in asia previously so with governments and corporations facing this increasingly urgent mandate to reduce dependence on fossil fuels, while heavy transport is a tough sector to address, it's really well-suited to hydrogen fuel cells and hyzon brings substantial capability