Asking for someone to pass you the salt will soon become a thing of the past. You'll probably find the salt hurtling towards you whether you wanted it or not. The self propelled salt mill has pull back wheels, so gently pull back on the salt mill and let go. It will hopefully maintain trajectory and and make contact with the intended target.
Pass the Salt is not just fun but also useful. Passing the salt now requires little effort and minimum inconvenience. The further you pull back on Pass The Salt the faster and further it will go, just pulling back gently will be enough to send it across the largest of kitchen tables.
The pull back motor is situated in the bottom of the salt mill so you can fill the rest with salt. The top unscrews to enable you to fill it up.