We cannot guarantee that our suppliers in Europe will agree to deliver a car to you. This is a system I have good experience with. I have driven already some 10000 km with it in various countries. It is made in the UK and used by some car-rental companies there. With some cars strong fingers are required also.
Lynx also helps finding rental cars in various countries.
An American portable hand-controls system similar to the British Lynx . It claims to have faster mechanical attachments to the car pedals. Judson says that Only 20 to 30 percent of the world's airports offer handicap vehicles for rent. The lightweight and portable Peddle Master may be carried in a suit case, so the physically challenged traveler may also have the option of renting any car that fits his or her needs. Also not all rental companies will agree to installation of portable system.