Hybrid and electric cars may be cancer-causing as they emit extremely low frequency (ELF) electromagnetic fields (EMF). Recent studies of the EMF emitted by these automobiles have claimed either that they pose a cancer risk for the vehicles' occupants or that they are safe.

Unfortunately, much of the research conducted on this issue has been industry-funded by companies with vested interests on one side of the issue or the other which makes it difficult to know which studies are trustworthy. https://www.saferemr.com/2014/07/shouldnt-hybrid-and-electric-cars-be-re.html#:~:text=Hybrid%20and%20electric%20cars%20may,)%20electromagnetic%20fields%20(EMF)