Sell it yourself! Trade in's just complicate the deal and make the purchase more expensive. A Bolt should be in high demand. Use Kelly, Edmunds, Autotrader, etc... to get a good estimate of it's value according to its condition, post it on Autotrader (and/or a local for sale site) and don't let some used car dealer talk you down so they can re-sell it. It's not a high dollar car so you should get offers quickly I'd bet. You can do this!!