One of my girls used to work at state farm (short lived.. went through there corporate training and stuck her with an agent she hated... didn't have a choice of what office to work at so she left)
She first asked me what year, make and model her other car was and I told her I didn't know but to use a 1995 Ford Taurus and she said... that no matter how/what the agent does, when it gets to underwriting they will put her on the new (higher rated) vehicle.
I know that is exactly how Progressive works. How the insurance biz seems to work is if us agents/customers abuse the capabilities we have they take it away. ie... Oh, every youthful driver you have qualifies for the "Good Student Discount"? ( 3.0 or better gpa) So now they require report cards/transcript from the customer. I am sure that it is the reason that is what happened at Progressive and State Farm on Youthful drivers and assigning vehicles. When I was at Nationwide Insurance they elminated even assigning a driver to a vehicle. They use "Driver averaging" (will not explain... don't want to make this longer then it already is) Nationwide even stopped asking how many miles do you drive a vehicle.
Statics show that kids get into accidents using those nice new cars more then those beaters they have "listed" as their primary vehicle.
Luckily for the time being here at Allstate I do have the capiblities of choosing which vehicle is your primary one and how many miles you drive it.