Scientists don't work for medals, we are driven by curiosity, and the chance to do something to help others.

All major auto manufacturers have developed [hydrogen-fueled] cars, but they are extremely expensive. At least this study will let parks know we've found a way to produce enough hydrogen to fuel 'X' number of vehicles on an annual basis.

They have a lot of great ideas about what they want to do.

I didn't wake up feeling like an icon because I didn't go to sleep.

Only a handful of states are looking at alternative fuels in a big way. This is being aggressive and looking for real-world solutions.

Scientists don't work for medals, we are driven by curiosity, and the chance to do something to help others. But the medal is a comforting recognition that what one has done has made a difference.