After three weeks, I can imagine that first drive back felt pretty special, especially if the Audi came back running and looking like new. One thing worth sorting out afterward is the paperwork if the car is going to sit unused for a while. In Germany, you can deregister a vehicle online, at a registration office, or through a service. I found a useful overview of the process and requirements here https://auto-abmelden.net/zulassungsstellen . It also explains what happens with insurance and vehicle tax after deregistration, which is easy to overlook.
After three weeks, I can imagine that first drive back felt pretty special, especially if the Audi came back running and looking like new. One thing worth sorting out afterward is the paperwork if the car is going to sit unused for a while. In Germany, you can deregister a vehicle online, at a registration office, or through a service. I found a useful overview of the process and requirements here https://auto-abmelden.net/zulassungsstellen . It also explains what happens with insurance and vehicle tax after deregistration, which is easy to overlook.