There’s no connection between car crashes in the US and risk of myocarditis from the vaccine in Sweden. Each country is looking at the risk for its own citizens.
As I said in the post you're replying to some people commenting here believe that the takeaway from this is that the vaccine is a great risk while interacting with cars daily, which is a far greater risk that they pay no attention to.
In that case, another poster already explained why this comparison makes no sense. Vaccination needs to be compared with the lack of vaccination, not with driving, getting out of bed or sky diving.
Yes, life has its risks and that's why it's smart to look at the data before you make each individual decisions.