CNET Car Tech reviews the Aha Radio app.

At the International Motor Show in Frankfurt, Harman International demonstrated an Aha app-integrated head unit it developed for Ferrari, featuring Slacker, Yelp, and Twitter.

Aha is a free download for Apple iOS and Android devices. Subaru’s Aha integration comes with the announcement of its “Starlink” in-car connectivity system debuting on the all-new 2014 ...