A small remark: car loot capacity.
I just started playing with vehicles and noticed that the capacity of some cars is not very logical. A delivery van (2 seat) has a 90 trunk and 20 front seat capacity (110 total). A taxi however, has about 50 trunk and 60 seat capacity (110 total). This is a bit strange, and has me always picking a standard 4 door car, because they are faster and more manoeuvrable. A van has 5 seats, and a normal trunk capacity, even more storage (I think about 130).
Some small things:
You can only put stuff on car seats when you are inside the car
When you've started transferring things to the seat, you can't stop. The only thing you can do is start the car. This is annjoying, because I was transferring items to a seat, when zombies surrounded my car, I couldn't move or do anything but start the car and drive a bit ahead, until the action was complete.