. >> jackie bilsell is the fuel cell engineer. >> i have been working this for 11 years. to finally, see it coming to production is exciting and a little nerve-racking. >> what is inside a fuel cell vehicle? >> instead of the gasoline combustingtion, we have fuel cell. it creates electricity on demand by combining hydrogen with an electro-chemical reaction. >> a membrane between the hydrogen and oxygen strips the hydrogen atom of the one electron. the electricity is generated as it moves around the fuel cell to hook up with the oxygen to produce h 20. >> so this emits water? >> only water. i can go show you. >> all right. . >> so this is where the water comes out? >> exactly. it will be a mixture of water vapor and a few droplets. >> if we want to see the water, there is a purge about theon, i understand? >> there is a purge button. >> sot water. so this is the big purge. >> that's kind of amazing. i want to drink this. you you are saying i probably shouldn't? >> gets atmospheric and environmental dirt in it. i wouldn't recommend drinking it. >> unlike most cars, the unde