Quoted from Vegas9:

The first 500 Hot Wheels machines out of the factory will have the complimentary Shaker Motor. The internal cabinet art is included as standard with every game produced. Additional standard features include: powder-coated armor and legs, real backglass, 3D lenticular back panel, checkered flag flipper toppers, RGB lighting throughout - including the GI, and a topper.
We are inching towards selling out of games with the free shaker motors with our recent marketing activities geared to the millions of Hot Wheels enthusiasts. Now is a good time to order if you want the free shaker. Games are ready to ship immediately.

Quoted from Hold_Fast:

Has anyone had issues with the magnet? I’ve just realized mine hasn’t been working/active for a loooong time now. Checked for loose wires, nada, tried testing it in the coil test, nada.