I am driving in Germany and Austria. The traffic regulations require children to sit in safety seats, but I have two children in the back seat and also need to accommodate an adult. If I put two safety seats, I'm worried there won't be enough space in the back. I rented a BMW 5 touring car. Are the electronic eyes in Europe very strict? I want to remove the safety seats on the highway, but I don't know if it's allowed ? Germany Q&A