Knex Car With Suspension

this is my second instructable. It is a knex car with suspension that actually works. Please rate and comment on how i can improve it

This is the base of the car, its not very hard

to change the height of the suspension change the spacers

1-normal view
2-view from bottom
3-the back
4-the front
5-the middle
6-the exaust pipe
9-front axel(there should be wheels here but i forgot to take a picture
10-rear axel (you do not need the motor on this it only stops it from rolling baquards but if you do make sure the arrows are pointing forwards)
11-wheels on
12-complete

this is the body it goes ontop of the base

3-5 Rear
6-8 Front
9-10 side

This is how you make the rollcage and roof (you do not need the rollcage as it has no effect on the car but it looks cool)

1 roll cage
2-4 Roof

6 this is where the roll cage connects (sorry for the blurry pic)

This is the spoiler, its fairly easy

This is the driver, you do not need it if you dont have it

to put him in just remove the roof then reattach it