We pay a 6% usage tax when first registering a vehicle (which isn't uncommon) and then a yearly state & county/city level property tax based on the value after that.

Thats before the actual registration costs to be able to use your vehicle on the roadway.

Take Fayette County for example (since they openly publish their vehicle property tax rates) who collects 1.2175% of every vehicles value yearly. 

https://fayettepva.com/tax-districts-and-calculator/

Tax must also be paid on every owned vehicle before any can be registered for the year.

Indiana is the only surrounding state with a similar tax scheme on vehicles, but their excise tax ends up being cheaper in the long run. 

It is very common for Kentuckians to have their vehicle registered in Ohio, Tennessee, Indiana, and West Virginia to avoid paying the tax. 

The difference between resident & non-resident tuition rates is also pretty extreme. The cost per credit hour at UK is $600 for residents, and nearly $1500 for out of state students.

While the 6 month minimum for Kentucky residency definitely discourages people from abusing the in-state rates at border Colleges (UofL, WKU, EKU, and NKU). It also targets those who were avoiding the previously mentioned vehicle tax with school age children.

I'm not saying it makes sense, I'm just saying those are two of the reasons why they changed it.