JupiterResearch forecasts that the US digital satellite radio market will grow from an installed base of 12 mln units in 2005 to 55 mln units in 2010. 66% of sales in 2005 will be transportable devices comprising both plug & play and handheld units. This trend will continue though to 2010, which will see 60% of sales coming from transportable devices. In-car device sales will grow from 2.5 mln units sold in 2005 to 6.9 mln units in 2010.