It's actually quite difficult to tamper with a car. You have to find the car in an unattended and out of sight place. That opportunity isn't available for high

It's actually quite difficult to tamper with a car. You have to find the car in an unattended and out of sight place. That opportunity isn't available for high value targets, and doesn't scale to 100k cars. In contrast, there are tens to hundreds of thousands of popular car models sold every year. Eg 55k Ford Focus sold in the UK in 2019. https://www.statista.com/statistics/463148/ford-focus-annual-sales-in-great-britain/ https://www.statista.com/statistics/463148/ford-focus-annual... Just a DOS attack would require every car to be taken by tow truck to the garage or visited by a tech to patch it, and the resulting reputational damage would be huge. I'm sure Ford/Toyota/etc would pay a ransom to avoid that.