that sounds horrible. in the country where i am from even a person who gives you the first aid cannot be possibly prosecuted as long as they give it their best shot at helping you, even if they would end up ultimately harming you (for example they try to stop a bleeding after a car accident and mess up your broken spine when moving you).
customer protection is taken seriously in germany (or any country whrere laws protect customers from companies rather than the other way around for that matter). you can’t for example just send an email to your customers saying “we’ve made some changes to our terms and conditions” without making it possible for the customers to say “ok, I’m out”. if there is no such option the customers may rightfully argue that this is simply not the product they purchased and the conpany is breaking their end of the deal.
i got first permabanned by a mod from r/news for commenting “when a terrorist hides in a school full of children it is not ok to blow up the school with the children still in it” under an article about IDF doing just that while hunting for some hamas fighters (no warning, no previous infractions, straight permaban, reason: “you broke the community rules” - no further explanation). it hurt a bit cause i did not participate in any political discussions normally. but shortly after that there was a picture of WW2 nazi flag on someone’s front yard in ohio and people started suggesting that someone should bring a veteran to this person to explain them the error of their ways. i didn’t resist and responded that this person knows exactly what they are doing and they do it cause there are no consequences to it. i also wrote that somebody should “tar and feather them and chase them around” - after which my account got restricted cause “we are trying to create a community where everyone can feel safe and therefore we cannot tolerate calls for violence against others”.
this number is so far off that it makes me doubt your whole story…
quick estimate: if we assume your teacher had a rather new car with good fuel economy (6l/100km) and was using only the least polluting fuel (e85 with 15% ethanol that produces some 1.6kg of co2 per liter) we would have to assume it was a really heavy car made entirely out of the stainless steel (1500kg of the most poluting steel that produces over 6kg of co2 per kg of steel, other materials have comparatively small contribution) to come anywhere close… about 10 tons of co2 from car production and from burning the fuel.
from these crazy assumptions you can easily see that most normal vehicles under normal circumstances will produce way more (like order of magnitude more) of co2 by driving than is produced by making them. for example a smaller car made from 600kg of normal steel (1.8kg of co2 per kg of steel) and fuel efficiency of 8l/100km (still very good) will produce more co2 than was produced in its own production after roughly 5000 miles of driving and is just adding after that…