You've never heard of any ICE car spontaneously combusting? You must not follow any car recalls, tons of cars have been recalled in the past due to fire risks.

https://www.caranddriver.com/news/a35782883/kia-cadenza-spor...

https://www.autosafety.org/ford-ignition-switch-fires/

https://www.mlive.com/news/2021/03/2021-ram-truck-owner-enco...

https://www.industryweek.com/operations/safety/article/21963...

https://www.auto123.com/en/news/gm-recall-risk-of-fire/61360...

ICE vehicles can have strange failure modes leaking flammable fluids places where they should go where its really hot. Sometimes this gets mixed with a spark from a bad electrical connector, sometimes it drips on something hot.