Fun at partys guy: While the car will actually experience a force torwards the magnet, so will the magnet experience an equal amount of force torwards tha car. Given the connection between the car and the magnet is stiff, these opposing forces will stress the connection and create a reactive force in there according to Newtens 3rd law, ultimatly canseling the forces out and neither the car nor the magnet will move.
If you however remove the stiff connection, the car and the magnet will move torwards each other untill they meet.
So this would work actually but only for a brief second as the electrical current generated by the frame of the vehicle passing through the magnetic field would disrupt the flux conduction in the magnet. This is mostly due to being the way that it is.
I built a scale model to prove the haters wrong. I had to tilt the platform a little for it to overcome friction, but once I did, the car rolled forward until it hit a wall.
Less fun at parties guy: While the diagram leaves it somewhat unclear as to what precise effect that mechanism is intended to achieve, clearly it involves electromagnetism and thus any proper explanation must begin with a full description of quantum field theory...
This is actually kind of how electric motors work as the rotor chases a magnetic field forever kept out of reach by the stator, and you can't tell me otherwise.
because the truck is self-propelled, and it can only go as fast as it takes itself. Therefore the magnet, which is attached to the truck, can only go as fast as the truck takes itself.
It's actually a common misconception that magnets always attract metal. This misconception was popularized by people joking that magnets are magic. In reality, magnets attract because they have magnetions in them. These magnetions allow them to attract things like metal but a little bit is used up each time. Eventually once the magnet's magnetions have been depleted, the magnet turns back into a newt and goes home to recharge.
You need a magnetic personality to make this work. No personality, no movement. And if you have a personality that pushes things away, the car might explode.