1. A method for creating an obstacle map of an area surrounding a motor vehicle on a road, the method comprising: preparing, by processing circuitry, a rasterized obstacle map; obtaining, by the processing circuitry, a scan of an area surrounding the motor vehicle; dividing, by the processing circuitry, the scanned surrounding area into cells, respective dimensions of each of which are determined as a function of respective positions of the cells relative to a course of the road, wherein the dimensions of the cells are adapted to an elevation profile of the road; recording, by the processing circuitry, which of the cells are occupied by an obstacle; and identifying, by the processing circuitry, grid points of the rasterized obstacle map that correspond to the recorded occupied cells.