flat mid-century Soviet book and magazine cartoon line art, uniform bold felt-pen contour, clean white paper skin with no tonal hatching, shading only as solid black fills and parallel stripe hatching on clothing, vast white background, a cheerful man of 40 in mid-century suit and cap running past a row of rounded vintage cars and buses in clean outline, a woman of 35 and a young man of 25 holding hands with small dog at their feet, flat two-dimensional cartoon with uniform contour and untouched white paper, no cross-hatching no engraving no realistic modeling, no children in frame, nostalgic automotive parade mood <lora:training_7185876-20260927070815457-09s0:1>