Engadget published a review of the Dash Express Internet connected GPS device. As reported the Dash Express is shipping to the pre-order customers. Amazon.com is taking orders for the Dash Express at $399.99 with a shipping date of April 29th.

Quote from the review: "As far as the actual interface goes, well, it's a GPS. If you've used a nicer PND before, nothing's really going to shock you. That's going to be the hardest thing for Dash to overcome, just as TiVo had to slowly educate users as to why they'd want to pause and rewind live TV: sure, it can work just like what you're used to, but once you figure out how much it's capable of, going back seems ridiculous.
Case in point, and probably the most-cited Dash Express network feature: almost every GPS can tell you where the nearest gas station is, but the Express actually looks up the latest prices for you and points you to the cheapest."
Read the full Dash Express review on Engadget.