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The concept at hand springs from an idea to incorporate as much as possible from real-life F1 races down to scales of 1:43 - 1:87. One important reason for this is that the 1:43 - 1:87 scales is very popular with model enthusiasts worldwide. Another reason is that these scales is sufficiently large to permit vivid detail while not being all too space consuming. The design of radiocontrolled model cars in the 1:43 scale and smaller is however very problematic. The needed components such as electronics, batteries, mechanical mechanisms, inertia mass and other desired features simply do not fit in the model due to the scale. This is especially true of F1 models in smaller scales because of their minimal body shape. Current radio-controlled cars in smaller scales can not achieve the special characteristics that this concept provides. The patented technology that makes this concept work is a concealed radio-controlled drive unit that utilizes a magnetic coupling to steer and propel model cars on the surface of a model course. In order for this concept to work, it repuires that the visible model course, whether a racing track or a street model, be combined with a hidden sub-course. The magnetic coupling also allows the model car to run on uneven surfaces and to a certain extent even on different elevations without problems. the concept has neither grooves nor tracks that the model that the model cars must adhere to, which significantly recreates realism. This allows for model cars to move freely on the course so that they may perform many different maneuvers such as driving in and out of pit-stops, garages and so on. Lifting out the power source, the power train, electronics etcetera from the model car and placing it all in a drive unit under the course, also has the advantage of enabling the drive unit to be used for an infinite number of different models. The concept allows for very realistic movements of the model cars, thanks to the precision technology of the drive unit. Smooth slow driving and acceleration, variable mechanical braking via foot pedal control, precision steering and more all contribute to the concept's "true feel". The drive unit makes it possible to apply the Mechanical Laws to scale, so that the perfomance of the models will be as close as possible to real-life vehicles. Realistic sound effects may also be experienced in both stationary positions and during driving from an audio chip connected to speakers in the drive unit, adding to the "authentic feel". Even illustrated properties on the model course such as grass, gravel etcetera may be made to affect the model's handling and movement via properties on the drive unit's subsurface. This, for example, allows for a slight lane departure with realistic consequences without the need to cancel a model competition. The driver's head in the model car is radio-controlled when stationary and tilted proportionally inward toward the inner radius of curves vhile driving. Furthermore, the car model has a steerable front end and an adjustable rear tire grip that mimics real-life to scale as closely as possible. The data for full scale maximum lateral force is 3,5 g which is equivalent to the value of the coefficient of friction between the tire and the course surface. This value when tranfereed to the scale of 1:43 will be 3,5/43 which equals approximately 0,08 (the value applies to a neutral slope when cornering). For perceived realism in competition settings, the models may be equipped with an approved equalizing skid indicator, which will indicate if the model car's speed exceeds accepted levels in curves. Once the indicator has been set off it may be reset by a model pit-stop figure in the pit-stop. Another advantage of the concept is that a model car competition club may for example buy and own several drive units while racing competitors need only buy and own the model cars themselves. A further advantage is that the model course may be comprised of different building modules, allowing for model enthusiasts to design courses as they like. If desired, for thr purpose of realism, it is possible for example to calculate to scales 1:43 / 1:64 the dimensions and other characteristics of a F1 race course. The different traits of race course such as the length of stright-aways, curve radii, the range of full scale acceleration, braking and lateral force may all be incorporated into the concept. For example, at the 1:43 / 1:64 scales, it is possible for a model car to attain a speed of 2/1,3 meters per second, which corresponds to a speed of 310 km/h at full scal