Draw tracks and watch a man on a sledge go down it.
With the pencil tool, draw a line
from top-left towards bottom-right.
Press Flag button while simulating to save the position and speed of the rider. Press Flag button in editing mode to start from saved position.
Press the Arrowed Pencil for speed lines, the Pencil with a rubber for scenery.
Press "Z" to zoom in and "X" to zoom out. Hold down "V" to draw straight lines