Is there a speed limit ON LeShuttle?

Hypothetically, if I were to drive my car onto the train that takes you to France and then speed at 83 miles an hour down the middle of the train until I reach my car’s designated spot would I get a speeding ticket? (Obviously thats assuming I have impeccable driving skills and dont crash into the side walls or into the car in front). I have looked on LeShuttles website and it says theres a maximum speed of 6mph whilst on the platform, but *technically* nothing about once you’ve actually boarded the train. Does the train count as a road? Furthermore the national speedlimits are higher in France than in the UK, so what would happen if I broke the UK speed limit but still stayed under the French speed limit? Further furthermore, how would the legal ramifications differ if I did that whilst still on UK soil, once on French soil, and if I was somehow able to pull that off whilst the train was halfway under the channel? All purely hypothetical of course