11. With your car assembled, roll it across a smooth surface. Describe your observations? Does it go

After assembling the car I rolled it across a smooth surface. When I did this I noticed that the car was approximately straight. Then when i tested it on the track the car moved a bit to the right side and at first I thought this was because of the wheels that may not be aligned so I tried to make them aligned, but then I realized that the track was slightly bent and that was the reason as to why the car kept moving towards the right side of the track. Overall I don't think there was anything causing friction which caused it to not go straight other than the washers at the back wheels which were really close to the piece of wood itself so when the axle spun, they rubbed against the wood which was fixed by slightly moving the wheels outwards a bit so that the washers aren't right up against the wood, rather so that they have a tiny space in between them.