Push, To brake. Pull, To accelerating. The device does not have to be removed in order to drive the vehicle by a non-disabled person. A permanent install hand control is highly recommended by the DMV because of its high safety Installing it permanently in your car makes it possible for someone else to drive your car and it won't disrupt the regular performance of your car. The driving controls will fit most vehicles, including minivans and full-size vans, pickup trucks, SUVs, crossovers, and wagons. Some vehicles may not be compatible with the type of controls. Even though this device is very easy to install for an automobile repair shop, please speak with your local repair shop before making any purchases to be sure they can assist you in the installation. This device should only be installed by an authorized mechanic shop or professional handyman