existential challenge is going to be china. it just is. >> we're in competition with china and other countries to win the 21st century. >> reporter: but what if, instead of fearing each other, competing nations tried collaboration? on the edge of the mojave desert is lancaster, california. in 2013, the unemployment rate here was 12%. and a chinese company called byd, short for build your dreams, bought an old motor home factory and revitalized it. today, it's the largest electric bus factory in north america. >> hello. >> reporter: ceo stella lee, a 22-year veteran of byd, heads up