The freedom staff can literally travel with you, from vehicle to vehicle. It can be quickly installed in any automobile with an Automatic Transmission, no tools necessary. It can even be packed and stowed When not needed. With low-effort steering, accurate and dependable acceleration and braking, you can now take back your independence. Go beyond your limits. Adapt. And get on the road to freedom! the freedom staff is the only portable handicap hand controls Product that also comes with a steering knob. This is a thumb controlled unit (CHA-720). built with Aircraft grade aluminum, stainless steel hardware, and convenient carry bag, your freedom staff will be your good friend for life. Installing the portable freedom staff into your vehicle, or any vehicle for that matter, is a straightforward operation. It does not require tools or modifications to the vehicle. With practice, you can do it in 2 minutes tops.