Do I have to depreciate a vehicle that was used for business and personal use that was totaled with no salvage value and maybe worth $1000 prior to accident?

I have never depreciated my car in the past. It was totaled in 2018 and was a 1999 Camry. Originally I bought it in 2012 for total sales price of $8500 less trade-in of $3500 = $5000.

Can't I just track my business miles on both cars that were used in 2018 and call it a day without dealing with gains and losses?