I wear a suit and Simpson hybrid S. I do this for fun, and really don't care what people think. We probably all hit speeds of 150+ and there are concrete walls... To each their own, but I believe younger people worry what others think, do what you feel you need to do to be safe.
https://rennlist.com/forums/racing-a...events-12.html
A good read on topic someone sent me to when I started...