1) It's a global issue as ALL vehicles (cars, trucks, RV's, boats, motorcycles, etc.) have become more electronic laden over the years.
2) The work from home situation exacerbated the situation as people and companies upgraded computers and systems to handle more remote workers. The hardware manufacturers ramped up their orders when they saw what was happening.
3) Conversely, auto manufacturers delayed or canceled orders at the pandemic's onset because they thought their sales would decline due to fewer people traveling to offices and more layoffs equating to fewer vehicle sales.
4) Because auto, motorcycle, RV, marine engine, etc. manufacturers operate on a JIT (just in time) lean manufacturing philosophy, when they realized their sales weren't declining, but actually increasing, they rushed to place chip orders, only to realize they were late to the game and fell behind computer hardware, smart home product, etc. manufacturers. Due to there only being a relatively few number of chip manufacturers worldwide facing their own supply issues, the initial reaction by the vehicle manufacturers is proving to be the major league PITA they're experiencing now.
5) As big as Earth is, it is actually fairly small as we operate in a true global economy with one tiny pebble tossed in a pond somewhere able to create ripple effects everywhere...