There are companies that will hire you to drive a van without a medical card. You just need to get your own van, cargo insurance, and find a smaller outfit to drive for. You can also try and get a second opinion from another doctor. If your blood pressure is under control, and your rapid heart beat can be controlled properly with beta blockers, what's the problem? Is your high blood pressure uncontrollable? That could be why your doctor feels you cannot drive. Please seek the advice of a second doctor before you make any decisions!