Ok here's the story....
I would like to have my own car soon because I will be starting college. [In the spring] Some people say it's better to get a used car but I want a new one. I'm 18 so I know car insurance would be a bit much, regardless which car I get.
I don't have any money saved up...
Just let him know how you feel, let him know that everything will be alright and he has a friend in you. You will always be there for him. Stuff like that.