And now to our nbc news series, the climate challenge. tonight, the electric car ride sharing revolution happening in a tiny farming community. it s now become a global transportation model. morgan radford was there. reporter: the town of huron, california, was once a transportation desert. now, it s part of an electric vehicle revolution so, david, are these all electric vehicles? they are. they re all electric vehicles reporter: known as green raiteros, the program now uses a fleet of electric vehicles funded by private donations to give free or low-cost rides to residents like gregory hernandez lopez. and this man both former farm workers who now ride several times a week to the nearest dialysis center 25 miles away