Mercedes-Benz is working on aftermarket installations of Apple’s CarPlay for older vehicles, 9to5Mac reports. The carmaker — one of three that recently introduced the new iPhone in-vehicle feature — wasn’t able to confirm when any aftermarket option would be available. It’s speculated in the report that such installations would come as dealer-installed accessories. Other manufacturers that will utilize CarPlay in their future vehicles may introduce aftermarket installation options as well; so far, there’s been no word on any official aftermarket CarPlay solution from Apple itself.