Unfortunately the feature of cars driving faster than trucks can be abused easily, even if it is restricted from overpopulated places. As you've already noticed, it has the equivalent crash physics of a truck for other players and I'm assuming that it's currently not possible to reduce it since it was released 8 years ago. Yes, cars do drive faster than trucks but I could see that it'll do worse than good due to the nature of the players here on TMP. This question was also answered here on the knowledge base, https://truckersmp.com/knowledge-base/article/574