Now that’s “fast” roadside assistance: AT&T’s LTE will power GM’s OnStar

General Motors'(s gm) OnStar system is going to get a turbo boost. AT&T(s t) and GM revealed at Mobile World Congress that starting in 2015 the automaker would embed LTE chips in millions of vehicles allowing them to connect back to AT&T’s 4G network. The deal would add considerable heft to the typical OnStar connection, which today utilize 2G connections.

GM said it would use the increased bandwidth to offer new infotainment features such as audio and video streaming direct to the car in addition to the usual complement of OnStar navigation, security and emergency services.

The deal is a bit puzzling because it contradicts the bring-your-connectivity strategy GM has adopted of late. While GM cars are all linked via cellular networks for its low-bandwidth telematics services, GM has relied on it customer’s smartphones to provide the heftier connections necessary to support infotainment services.