If you need a space fighter to hunt bogies with, this LEGO ship by Linus Bohman might be just the thing you need. Linus built this fighter around a skeleton of railroad track parts including curves and straights from the 4.5V era and six Duplo curve sections. I’d argue that this build is all horsepower, no ballast, with huge engines embedded in each wing. All-in-all, the grey details between the rails provide a nice buffer, while the rails themselves couple everything together!