You can visit any car dealers near you who buy and sell used cars. They will probably give you a cheque but it will be of much less amount. This is because many car dealers would prefer if you add some money on top of your car so that they can give you a better one than yours.
its pretty simple if you go to any car dealership, you can trade your vehicle in but only towards the purchase of another vehicle. almost never will they just give you a check for it and send you on your way because they want you to spend money
Some car dealers will buy your car and write you a check for what it's worth. You don't have to purchase a car from them. I known plenty of people who did this and my fianc works at a toyota dealer that does this. They will walk you through the process.