>>1281736It depends on the operator. Typically, the car wagons are positioned close to some kind of ramp. Some operators have you park your car, and a professional driver who is trained will park your car onto the train, and it will be secured by the axles.
Some operators have you drive your car yourself onto the wagon, and you disembark.
In the case of the Eurotunnel "Le Shuttle", you will drive onto the platform, then drive into the train itself. Since that train is pressurised and enclosed, you only need to use the handbrake and set the car in 1st gear.
