thank you all for joining us, ma ris sass lagos, rachel grana and michael mullins. after more than a decade of puttering long, hydrogen powered vehicles may soon be kicking off in california. they emit only water vapor from the tail pipe. governor jerry brown recently signed legislation to fund more hydrogen refueling stations and manufacturers like toyota are coming out with new car mod did hes. still the vehicles have a lot of catching up to do with other alternative cars already on the road. scott shafer narrates our story. >> like most people, bill holloway commutes to work, driving 75 miles from his home in alameda, california. but then again, most people don't make their commute in a hydrogen fuel cell vehicle. >> i drive a very rare car. there's only a handful on lease here in northern california. >> this rare car uses hydrogen instead of gasoline and emits only water vapor instead of harmful pollution. >> the economy of this mercedes is great. i average 58 miles per kilogram of hydrogen, the same as 58 miles in gas. i picked the hydrogen car because i was ab