hat. this is trending on dotcom. there have been a lot of winter weather out there. people having lots of problems clearing the ice and snow off streets. an idaho engineer has a great idea. it's getting the attention from the federal government as well as general electric. basically these are what they are calling smart roads. and what happens, it's a very strong glass. underneath it, solar energy is going to get stored. think of it as the rear-view heating element in your vehicle like the defrost. kind sdf that and melts it off. this is exciting. still going to start testing this, they think in the spring. it would save the nation millions, billions of glrs sand and salt and snow removal. >> and it could have helped atlanta out a lot last week. >> and new york the week before. >> absolutely. >> thank you, jacqui. new trouble for seven-time tour de france star lance armstrong. a new "sports illustrated" article raises questions about doepg allegations.