Road Inc. has been out since last year and has generally received very good reviews from publications and users. It basically turns your iPad into a digital coffee table book or, as the company puts it, "Road Inc. is a fully interactive anthology of cars that marries the cutting edge of digital technology to traditional publishing craftsmanship."
There's no game here but there is a ton of content, including a "3D museum," 3,000 archival documents, and 70 videos that cover 50 landmark automobiles from literally every angle (you can spin the cars around and get a 360-degree view).
We're not sure what the developer Pyrolia has in store for the new iPad and its Retina display, but this is an app that does a good job showing off the graphical capabilities of the iPad. An iPhone version is in the works and Pyrolia plans on adding additional car models.
The app normally costs $4.99 but it's on sale through March 11 for 99 cents.