I hope you don't do your own taxes.
So the value of a new car a year later is pretty static? When it comes to many of the Toyota models they do remain static over short (lets say 1-3 years) periods of time. That % change (depreciation) is going to be less than a new car over that same period in most cases.
If I buy a new Tacoma and park it for a year that value changes significantly. If I buy a 2009 Tacoma and park it a year, not so much.