You've probably seen your fair share of Ice Bucket Challenge videos online this week, which are meant to raise money to fight amyotrophic lateral sclerosis (ALS), often called "Lou Gehrig's Disease." Hopefully, you've seen ours. We've watched a lot of these videos, but haven't seen one that makes an alt-fuel point quite like a new video from Toyota.

Julie Hamp, the CCO of Toyota North America, lost a sister-in-law to ALS last year, so for her the cause is personal. Instead of just dumping icy-cold water on her head, Hamp uses water from the FCV fuel cell vehicle parked next to her. Because, of course, a hydrogen fuel cell car emits nothing but water vapor.

Toyota didn't run a lot of hydrogen through the car to collect water, it just got enough to top off the ice bucket. Using the water emissions from a hydrogen vehicle in a creative way is not a new trick. Two years ago, the California Fuel Cell Partnership made the point that you can drink the emissions (just like Mercedes-Benz did earlier this year), but admitted that "fuel cells produce about the same amount of water as gasoline vehicle – about 1/3 cup for a full day of driving." Still, for a good cause, we'll accept the mix of tap water and "emissions."

Check out the video below, if you haven't had enough already.

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