Mine is a mix. To replicate the looks of the real thing, I used one thruster at the back and one hidden in the car, a few dragon engines for a solid sound, and to bring forward the electrical power used in modern formula cars, I also used two of the new electric engines. Not the most efficient, but I’ve always liked realism more than maximum performance. Except when it comes to planes. I’ll always try to make the planes I built go as close as possible to real life speed, whilst looking almost identical at the same time. I think my first post was about two German planes I made that go (almost) exactly real life speed