Unfortunately, Apple Car Play support does not include iPads at this time.
The new MLB.com At Bat app for iOS also adds embedded tweets into news stories, as well as gifs and photos. And, the new update allows users to share video highlights directly from the media player interface (see screenshot), making it a lot quicker to share favorite clips.
By the way, like other sports apps such as NBA Game Time and ESPN, the MLB.com At Bat app recently added support for Apple Watch. With the app, users can get live scores, stats, player cards, and other MLB content right on Apple Watches. And, MLB.com more recently added a league-wide scoreboard and access to last game results.
The MLB.com At Bat requires iPhone 4 or newer running at least iOS 7.0 or later.