Java code:

final color RED = color(255,0,0);
final color BLUE = color(0,0,255);

class Motorbike {
  int x = 5; // members
  int y;
  int speed=2;
  int size=30;
  color colour;
  
  // methods, procedures an object of this class can perform
  void render() {
    float wheelHeight = size/3;
    fill(colour);
    triangle(x,y,x+size,y,x+size/2,y-size/2);
    drawWheel(x,y,wheelHeight);
    drawWheel(x+size,y,wheelHeight);
  }
  
  void drawWheel(int x,int y,float size) {
    float inner = size*2/3;
    fill(0);
    ellipse(x,y,size,size);
    fill(255);
    ellipse(x,y,inner,inner);
  }
  
  void move() {
    speed = (int)random(5.0); // random step [0..5]
    x+=speed;
  }
}

Motorbike redBike, blueBike;

void setup() {
  size(500,100);
  redBike = new Motorbike();
  redBike.y = 25;
  redBike.x = 15;
  redBike.colour = RED;
}

void draw() {
  background(125);
  redBike.render();
  redBike.move();
}