First build the wheeled base as shown.
Then you can add more K'NEX parts to it in any way you like, to create your very own wheeled vehicle.
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The model can be built using:
1. A K'NEX Base kit
2. Four K'NEX wheels such as the K'NEX Hub Narrow 50mm Grey plus K'NEX Tyre Narrow Black shown in the photo
3. A K'NEX battery motor (any colour).
First, assemble the driving axle, by adding to a red rod:
1. A tan clip, with the pin facing towards the end of the rod.
2. A blue spacer.
3. A yellow connector (with the rod through the hole in the middle).
4. A blue spacer.
5. A silver spacer.
6. A white connector.
7. The battery motor.
8. A white connector.
9. A silver spacer.
10. A blue spacer.
11. A yellow connector (with the rod through the hole in the middle).
12. A blue spacer.
13. A tan clip, with the pin facing towards the end of the rod.
Next:
1. Add a wheel onto each end of the rod, so that it engages with the pin on the tan clip.
2. Secure each wheel in place with a snap cap black.
Now assemble the rear axle by adding to a red rod:
1. A snap cap black.
2. A wheel.
3. A silver spacer.
4. A yellow connector, end-on to the rod.
5. A blue spacer.
6. A silver spacer.
7. A yellow connector, end-on to the rod.
8. Two blue spacers.
9. Two silver spacers.
10. Two blue spacers.
11. A yellow connector, end-on to the rod.
12 A silver spacer.
13. A blue spacer.
14. A yellow connector, end-on to the rod.
15. A silver spacer.
16. A wheel.
17. A snap cap black.
Finally, join the driving axle assembly to the rear axle assembly.
What next?
Now you can build on your vehicle base to create a wheeled vehicle to your own design.
Why not start by adding some more rods to the yellow and white connectors in your vehicle base?
Also, as you can see from the photo, we have joined the axle assemblies using four red rods.
For a shorter vehicle, use four yellow rods. For a longer vehicle, use four grey rods.