Step #1
Draw an oval & triangle like shape.
Step #2
Draw outline for upper roof.
Step #3
Draw edges as shown.
Step #4
Draw shapes over front & right side.
Step #5
Draw further shapes at front side.
Step #6
Draw square shapes at the end.
Step #7
Draw several doors.
Step #8
Draw main door & several windows.
Step #9
Draw driving seats.
Step #10
Draw wheels & track.
Step #11
Improve drawing as shown.
Step #12
Make necessary improvements to finish the drawing.