If you have a recent picture of your long-lost friend and their driver's license number, you can use these resources to track them down. First, you can try using a reverse image search engine like Google Images or TinEye to see if the picture you have is linked to any online profiles or accounts. You can also try searching for your friend's name along with their driver's license number on search engines like Google or Bing. This may bring up public records or social media profiles that can help you locate your friend.
Another option is to use a people search website like Whitepages or Pipl, which can help you find contact information and other details about your friend based on their name and driver's license number. These websites often have access to public records and social media profiles, and can provide you with a list of possible matches. You can also try using a reverse phone lookup website to search for your friend's phone number, which may provide you with their current contact information. By combining these different methods, you may be able to track down your long-lost friend and reconnect with them.