Clearwire had a two-pronged launch on Tuesday with news both of its CLEAR WiMAX service reaching Las Vegas as well as the availability of the Samsung Mondi for its network and othe device news. The 4G-level service debuts on the 21st and will give the desert city typical download speeds between 3Mbps and 6Mbps, rendering it suited to video streaming and other broadband tasks on the road. Plans s