Because it makes the vehicle too long to park in the average garage or driveway.

What cracks me up is the piece of metal, labeled metal, attached to the one metric ton of... Metal

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.

It will, but why do you want the truck to attract the magnet? Are you going to drive backwards everywhere?

This illustration does not imply that the car is moving. There are no "speed lines" or arrows that would indicate that.

So the illustrated setup would 100% work.

Try pulling yourself by the nose.

Good old troll physics.

W...wait, why is the troll head missing?!?

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.

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.

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...

What's funny is this would actually work if you just pointed the magnet at other people's cars.

Because both of the magnet's poles are pointed at the car and the attraction and repulsion are canceling each other out.

The mount is holding the truck back. You need a wireless magnet.

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.

Well, you used aluminum. Good work.

The CIA puts backdoor code in all the magnets to prevent this from working. Source: trust me bro.

It's because the magnet is in the vertical position, it needs to be in the horizontal position to properly complete the circuit

the car already has metal in it, so the metal block is unnecessary

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.

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.

easy: the metal is pulling the magnet backwards and the magnet moving backwards is pushing the whole truck backwards through the arm.

(explaining things wrong is a fun hobby)

Magnets don't do work

Wile E Coyote has entered Lemmy.

Obviously you used a non ferrous metal.

Go (back) to school

Mythbusters did a similar one using a fan and a sailboat. The boat moved. Backwards.

Why not just use rope instead of a magnet? You wouldn't need the extra metal on the front if you did that and would save weight.

After hitting too many children the tires will get stuck.

The large array of third party lighting fixtures exert photon pressure enough to cancel out the magnetic pull

Cuz Newton invented conservation of energy /s

He knows too much