The Car is registered from April to November 4-10 you can see it on my License Plate at the end. Its a special one.
You cannot drive the Car in the 5 Month over the Winter but its covered over the Insurance if it get stolen or so but needs to be parked on Private Property.
I did this because its only my Track Car and i not Daily drive it.
You pay less Tax and less Insurance.
Also i got a Heated Windshield
Wikipedia
Vehicle registration plates of Germany
Seasonal number plates are popular for motorbikes or convertibles in the summertime, or for “winter cars” substituting them, yet these plates are available for any vehicle.
[1]: §9(3) They bear two 2-digit numbers at the end of the plate indicating the months between which they are registered to drive, with the licence being valid from the start of the upper month until the end of the lower month. This results in lower car taxes, as well as lower insurance premiums.