What sporty car can i get which is under insurance group 11?

I am getting driving instructions although i'm not operating yet and i am merely exploring around to get a vehicle but i don't understand how things work. what is auto  insurance  ? Why do we want it? and what are quotes? please enable me!!! Thankyou much enjoy xx
"My partner get races his motorcycle for fun. But the one race he got injured. Their brother offered to drive it house for him"I'm 17 yrs old. Idrive a 2002 Cadillac escalade although I'm going to get a 2008 Honda accord but right. My  insurance   is $130 a month right-now and that I was thinking if it would increase it