1) If he was 18, I could understand
![Wink ;) ;)](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f609.png)
. I did it as well.
2) Seeing grown men revving their engines with cut-off exhausts (IMO) comes across as immature. It reminds me of the behaviour of people from some hot and dry countries I've lived in. "Look at me, I've got an expensive powerful car look at me".
3) Your car your choice.
![Grinning face :grinning: 😀](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f600.png)
4) I've been out (meetups) with people who have very loud exhausts and rev their engines in traffic etc. They usually get dirty looks from passersby and most people do not enjoy the noise (which is what it becomes) or the puerile behaviour and I find it embarrassing to be with them.