To try it out you will need to get 2 small pieces of hardware , 1 cheep software program and an AB type usb cable.
1. An Atari 2600 joystick available from many sources for about $20. 2. A 2600 to USB adapter known as the 2600-daptor available for $25 here: http://www.2600-daptor.com/ 3. A simple little program that will assign keyboard keys to the joystick buttons.
Available here for about $7 here: https://joytokey.net/en/download
Attach the joystick to the adapter and the adapter to the PC.
Start JoyToKey and assign the keys you use to drive GR to the appropriate joystick buttons.
Start GR and try out your new controller.
This WILL take some getting used to! ( remember the first time you drove GR? )
But give it some practice and see how you do.
One thing I find much easier to do is tap the brakes while turning.
You can really tighten up your line this way