Your insurance at that age will be just shy of half the monthly car payment.
But, shifting gears here, not sure what a 19 yr. old does to be able to afford a nearly $100k car and has no debt. Well, actually I do get it. If you have no debt you still live at home, barring some sort of ludicrous cash pile. Most of us adults have debt. It's all about the debt-to-income ratio though. Debt is fine so long as you can pay it off and the DTI is the measure used to assume that you have the means to do so.
If you do live at home, keep in mind that getting approved for a car loan of this magnitude is going to torpedo your DTI (again, unless you have some sort of massive cash reserves or income stream). A poor DTI will keep you from getting apartments, home loans, low cost student loans, and so on. Credit score doesn't matter if your DTI is upside down. Just be sure that you're willing to hamstring yourself financially for a car... and for a car that is going to cost a lot of money to maintain and operate as well. In short, a Hellcat is going to likely cause you to keep living at home for a long while. For me, that's a non-starter. I moved out when I was 19 and have never returned except as a house guest. Nobody respects a grown man who still lives at home, regardless what he drives.
For these reasons, this is how I plan on handling my kid. At 16 he'll get a car. It will be a 1971 VW Beetle. I could get him a Hellcat of his own, but I'm not stupid. I was 19 once. When I was 19, I bought an Eagle Talon TSI and within 2 week, hooked up a dry NO2 shot up to it (500hp LOL) and it didn't make it 60ft down the drag strip. However, I did that modification myself and by 19, I had already restored 2 classic cars (67 Mustang and a 70 Torino 429).
So, back to the 71 Beetle. I already own the car. It's quite literally being stored in the open with a tarp over it. It doesn't run. The body needs work, windshield is busted out and just about every piece of the essential equipment is non-operational. This is the car I'm going to give to my kid. Also at 16, he'll be forced to get a job. As he makes money, he'll use it to rebuild and repair that 71 Beetle. When he's done, he'll sell it (or keep it if he really wants to). And, if he does sell it for more than he put into it, I'll buy him a new car as a reward. In the interim, he can drive the family Hyundai if he needs to go somewhere (not even I will ever drive my wife's car and I hate riding in the damn thing). Motivation can be a powerful ally.
In the process of rebuilding that Beetle (which is simple, really), he'll learn the fundamentals of car maintenance, design, and care that still apply to cars built today. It'll serve him well in life. To rebuild it, he'll have to get and keep a job. Learn to budget, find deals on parts, negotiate, and be industrious. This will help build a business acumen, or at the least, expose him to how the world works financially. Then, when he sells it, he'll learn more about buying/trading, how to prep a car for sale/auction, and learn how to do paperwork at the DMV. Then, he'll be ready to own his own car.
Until he gets a speeding ticket or worse... and I get the car back. My dad did the same to me (67 Mustang). I elected to keep it, got a ticket a month later and I didn't see the car again until I was 18 and could afford to pay for my own car insurance