How can they be in the USA one day and in France the next.

The cars, spares and crew.

I've travelled on an Antonov 124, and believe me that transporter is no joke.

Do they use things like this?

They were n the US 2 weeks ago ? Not Thursday.

This was covered in the build-up to one of the races, they use a mixture of air and sea freight for the "flyaway" races.