I tow a 2016 Chevy Sonic 4 down. Cost less than $1000 to set it up for flat towing (I did all the labor). I can disconnect it in less than 1 minute and reconnect it in about 5 minutes. There is a lot of misinformation about what pulling the "fuse" does. In my case, you pull the DLIS fuse which allows you to turn the ignition off and remove the key with the transmission in neutral (no steering wheel lock on this model). It does not disable anything else; in fact you can drive the car with the fuse removed. With the ignition in "off" your electronic odometer will not register any mileage. It's a 2700# car and I really haven't seen any gas mileage difference when towing it vs not towing it.
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