This is a robot which can change it's shape. Yes It does! It looks like a regular car and changes to snake! It sounds weird but why not!
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The prototype V1.0 shows that the proof of concept works.
A single servo was used to lock the wheel axle.
CAD design of the Robot
Version2.0 has 2 servos on the joint and 2 servos for lifting the object.
CAD design of the robotic snake.
The Assembled Robot in car mode.
V2.0 3D printing completed.
Assembled the parts with motors, motor drivers, arduino, and servos.
Robot in snake mode.
Robot carrying a box.
Received mecanum wheels.
The size is 60mm.
Rendered image of the robot with forklift.
Rendered image of Robot carrying the object using forklift
Resizing the wheel to 60mm. We observed that the wheel was too small to have a ground clearance. So the wheel is being upgraded now. 
We are also planning to include 2 servos on the joints to control the wheel axle. This increases the stability and flexibility of the robot.
If you haven't patented this design, do so now. Seriously, this is a great warehousing robot design. Patent it so that you have some control over who develops it into a product.
It's already patented. We are working on making it a large scale prototype to make use in the industries.
Karthik
this project is good design..can u please let me know about the specifications of the components used