I don't know about other property seized as evidence, but my car costs a nontrivial amount for me to own and maintain, and it's critical for my way of life. Losing my car for even a couple of days would be a very serious disruption of my life.
I think you are woefully underestimating the apathy that the justice system (or any other large bureaucracy, public or private) has for the collateral damage it causes to peoples lives in pursuit of executing policy.