How is the RUF propelled?
On normal roads, the RUF functions as a normal electric car. The batteries are smaller because the RUF uses the rail when it drives long distances. On the rail, the RUF takes current from the rail so the batteries can be charged during rail travel. Normally the rail travel is fast, so the time is too short for a complete recharge of the batteries. In the case of a rail power supply breakdown, the RUF train can continue at reduced speed with power from the batteries. If the user needs to go to a place a long distance from the rail system, the 50 km range may be too short. In this case, the driver can use a special hybrid unit which can be mounted under the RUF. It fits into the A-shaped slot along the underside of the vehicle. It contains an ICE motor running at constant speed, optimized for maximum efficiency and low pollution. The motor drives a generator which makes electric power for the RUF. The hybrid unit has a gasoline tank with sufficient volume so that the hybrid RUF has the s