Which cars/models have the lowest insurance rates?

"A couple of months ago I got a ticket in BaltimoreI'm A - 16 year old female in Ct having a GPA over 3.5 and merely a's and n's. I required the individuals ed program and that I will be operating a 2008 jeep Cherokee.
"I want to purchase a white mustang and am 16"May my car insurance premium go down in value when i pay-off my automobile