Jaguar Land Rover and AT&T have partnered up to offer a $20-per-month, unlimited, prepaid data plan for owners of select JLR cars. This makes JLR the second automaker after General Motors to offer an unlimited data plan for its in-car Wi-Fi hot spots.

Notably, this car-based unlimited data plans does not include the same 22GB soft cap as AT&T’s standalone unlimited plans — users can use as much data as they want. With smartphone- and tablet-based plans, once a particular device has exceeded 22GB of data use in a month, AT&T will throttle data speeds if the device is connected to a congested cell tower.

A number of US carriers have begun rolling out unlimited data plans recently, and the $20 in-car plan — with unlimited data for multiple devices simultaneously — could be particularly useful for families or those working from their car. The JLR product is branded as InControl Wi-Fi and is powered by an AT&T 4G LTE hotspot via a fixed antenna in the vehicle.

It’s available on select Jaguar and Land Rover vehicles including the Jaguar XE, XF, XJ, and F-PACE, and Land Rover vehicles including the Discovery and Discovery Sport, Range Rover, Range Rover Sport, and Range Rover Evoque models.