During the production run, Benz made improvements to the car, including fitting it with a fuel tank and upping output to 2 hp, which raised the top speed to 10 mph. It's said that around 25 of the original Patent-Motorwagen were built between 1886 and 1893, but none survive today. In 2001, Mercedes-Benz Classic created a run of exact replicas that it actually sold to people, shown at the top of the story. Also in 1886, about 60 miles away from Mr. Benz, Gottlieb Daimler created the first four-wheeled automobile when he fitted a carriage with a combustion engine he had developed with Wilhelm Maybach. The two never worked together or even personally met, but forty years later, Benz & Cie. and Daimler-Motoren-Gesellschaft merged to form Daimler-Benz AG, and the Mercedes-Benz brand as we know it was born.