If you plan ahead, and build with every need in mind, you can use your race car hauler in several other ways... like, a spare engine for the race car, AND a service lift for working under the car at the track

As I recall, I posted a couple of times about this remarkable Mercedes race car hauler, and they put a race car engine spare in it, so that they'd have one when needed... already to be used in the race car, but not taking up space on the hauler, dead weight if not used.  https://justacarguy.blogspot.com/search?q=renntransporter

https://www.collierautomedia.com/last-minute-challenge-the-55-targa