It depends on what you/your family defines as "bad location". For our family, the Cars section is the last one we'd choose. Being in building 2 -- depending on the room location -- could be a quarter mile walk one way to the food court and bus stops. For a family (like us) who uses the refillable mugs frequently and makes at least 2 trips to the parks each day using Disney transportation, that would be a BAD location. However, for a family who doesn't use the mugs (or is happy to only fill them once a day) and is planning to use their car to drive to the parks each day, building 2 would be a GREAT location. Personally, if I was staying in the Cars section, I'd definitely request "close to transportation" in hopes of getting a room closer to Animation Hall. All of the rooms are exactly the same so there's no size difference. As far as what floor to request, we've been on the 4th floor of each of the LK buildings and the 1st floor of Nemo building 5 and we didn't really have a problem with noise in any of those locations. When we were on the 1st floor, I was concerned about noise from above us, but I never heard anything. Keep in mind that the elevators are located in the center of each building. That's important if you're on the upper floors and need to use the elevator due to physical limitations or because you have a stroller or
ECV. If your room is located at the end of the building closest to Animation Hall (in any section), you will have to walk past your room location on the ground floor, use the elevator, and then walk *back* to your actual room on the appropriate floor. It can feel like a lot of extra walking after a long day in the parks. As for views, I'd probably request a courtyard/pool view. Your other options are parking lot view or a view of the lake where there will be a lot of construction going on as they start work on the gondola station. Though if your kids like construction, that view might be awesome for them.
I will say that Cars is my favorite themed area of the resort. Especially at night. That's the main reason I'd request a courtyard/pool view -- so I could look out of my window every night and just soak it in. Good luck with your decision!