a specific car. Vehicle collectors: Red plates starting with the number 07 are reserved for collectors of vintage vehicles. Originally, vintage vehicles had a required minimum age of 20 years from first registering. Since April 2007, the required minimum age has been 30 years. Plates issued under the old 20 years rule remained valid after this date. The collectors must get an official certificate of approval (such as no criminal records). They are allowed to use one set of plates on any of their vehicles under the condition that they keep a strict record of use. No day-to-day use of the vehicles is allowed. A valid official technical inspection is not mandatory but the vehicles have to be technically fit for use on public roads. Different formats and styles Classic vehicles (known in German by the pseudo-English expression ) can get an H (, historic) at the end of the plate, such as K-AA 100H in order to preserve the so-called "vehicle of cultural value" (). This also implies a flat tax of around €190 per year. It is popular to choose the digits so that they indicate the car's year of manufacture. The requirements for a vehicle to receive an H-Plate are: The first documented registration was at least 30 years ago. The car must be in mostly original and preservation worthy condition. Preservation worthy means a grade C by popular car grading standards. The older the car, the more signs of usage it can show. This purely concerns the car's appearance; the road worthiness is established by separate mandatory safety inspections. Plug-in electric vehicles. The 2015 Electric Mobility Act authorised issuing special licence plates for plug-in electric vehicles to allow proper identification to avoid abuses of these privileges. The special licence plate adds the letter E at the end of the licence number. Owners of all-electric cars and plug-in hybrids with a minimum all-electric range of can apply for the special licence. The minimum range for eligible plug-in hybrids goes up to from 1 January 2018. 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. 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