Chapter 31: hover cars?

hmmm I have an unexpected trued theory about hover cars ..... instead of making use of so much complex and intricate things why don't people try to use magnetic force ? simply put it you can use magnetic force to let two magnets stick together why can't they use the same method used to keep them apart earth has a magnetic force if you can use magnets to repulse that magnetic force you got yourself something that's hovering above the ground