Closing the barn door after the horses have already escaped?I never really liked the Tumbler, I really hope he gets a new car in the next film.
Plus after the incident where he was nearly exposed by someone who found the Tumber's design I would imagine he will try to distance himself from Wayne Enterprise equipment.
The guy who discovered that was an extraordinarily resouceful "hacker" who clearly dug past some barriers to find that information. He's not a "villain" in the conventional sense, but he's a near PERFECT fit for the latter-day version of "The Calculator" (who's been seen in that new guise a lot in recent years, leading up to the "52" event in the comics). The guy is basically the "dark" version of Barbara Gordon's "Oracle". Except that while Oracle is a mysterious unknown figure who feeds information to and coordinates the actions of HEROES, this guy is the mysterious data-mining genius who feeds information and assignments to a variety of bat guys.