scott rowader joining us on the telephone and the owner of east end ready mix.facture a beet juice mix. i bet the trucks are benefiting. next we have an executive from one of the world's top natural gas engine manufacturers. we will tell you what they are doing next. ♪ >> with temperatures of 20 or 30 degrees below zero across the united states, did your heart skip a beat when he try to turn your engine on this morning? i want to point out that in numerous american cities it was colder than the south pole today. my next guest joins me from chicago where it is certainly a few degrees below zero. he's the chief operating officer of power solutions international. he is one of the largest meaning manufacturers of gas powered engines. thank you very much for braving the cold to be with us. tell us first of all about the challenges of using alternative fuels in combustion engines. >> one of the challenges right now is that there is not a large availability of engines. most of the engines run on diesel. very few engines are available. what we are coming out with is a w