You did great! you stopped yourself!This is wonderful.
I hope you see this as a good step.
I have bought cars on a whim too. A little sports car with a terrible blind spot.
They let me give it back to them after I went in and was making a scene about the safety of this vehicle. Fortunately they let me have my traded in car back. I later bought another more sensible car from them, 6 months later.
I was lucky.
bizi