. >> so in other words, tetzel in addition to making reminiscence on the cars was also making revenue for solving credits? >> and still are. testimony made $76 million through credits alone. it's a lot of money and it has a big impact for these electric vehicles. >> how many electric cars of the 120,000 sold last year what portion are in california speak with a lot. if you look at california and the states that are following these mandates, it's almost all of them. it's hard to get really good numbers aren't exactly where the cars are being sold. the california put out an announcement i think november of last year that it together with its partner states have sold 250,000 electric vehicles, and that was when the u.s. electric vehicle market had cumulative result about 250,000 electric vehicles. so it's not all of them but it's a lot of them. >> you can watch this and other programs online at booktv.org. >> here's a look at some of the upcoming book fairs and festivals happening around the country. andlet us about the present festivals in your area and will be happy to add them to our