[Caddylackn]

If you really want to make this a fair comparison, include all added yearly driving costs and assume she gets one speeding ticket a year or every other year.

Then jack up her insurance rates from the 1 ticket per year and add the costs of the speeding ticket to that. This could easily be another $2000 per year. She should also use a shorter oil change interval, oil brakes down faster at higher rpms, and her brake pads and calipers and wheel bearings will wear out faster, so add those shorter maintenance intervals in.

Now add in a minor wreck every three years (she will be okay, its a safe car) from following people too close trying to keep her intended speed. People who speed tailgate other drivers doing the speed they want to drive so slower drivers do not pull out in front of them.

I have been doing road design and Civil Engineering for years. You cannot Engineer out the stupidity of drivers or pedestrians or slow people who want to speed. About all you can do is remove obstacles out of the shoulders and clear zones so when they drive off the road while looking at their phone, they don't hit something and sue you. You can design and build the safest intersection in the world with flashing lights and narrowed road, safety bulb outs, etc. and some idiot who is high will cross the street in front of the car at night dressed in black and get hit and still sue the driver and possibly the Engineer.