Yes, it is possible to remove house paint from a vehicle, and there are several effective methods to do so. Here are some recommended techniques:

1. Initial Cleaning: Start by washing the car with car wash soap and water to remove any dirt or debris. This step is crucial to prevent scratching the car's surface during the paint removal process.

2. Clay Bar Treatment: After washing, use a clay bar kit to gently remove contaminants from the paint surface. This prepares the area for more effective paint removal.

3. Using Paint Thinner or Solvents: Apply a paint thinner or a specialized solvent to the area where the house paint is stuck. Let it sit for a few minutes to soften the paint, then gently rub the area with a soft cloth or sponge.

4. Household Items: Common household items like vinegar, baking soda, and WD-40 can also be effective. For example, spraying WD-40 on the paint and letting it sit can help lift the paint off.

5. Scraping: If the paint is particularly stubborn, you can use a plastic putty knife or a razor blade to carefully scrape it off. Be cautious to avoid damaging the underlying paint.

6. Rubbing Compound: After removing the paint, you may want to use a rubbing compound to restore the car's finish. This can help eliminate any scratches or dullness left from the paint removal process.