A car has moving parts that you have to worry about. Most people take their cars to professionals when something significant goes wrong with them. Ever have to have your N800/810 towed? Do you have a little checklist on your tablet telling you when you need to have it serviced next? How often do you have your tablet inspected? How much are the annual licensing fees? Insurance? Have you had to make decisions about how much fuel you can expend on your tablet because of increasing prices? Are you licensed to use your tablet? Got any tickets lately?

What I am saying is, there are many dimensions to owning a car that simply aren't a factor with a tablet. So the car is more complicated.