Boats
no they were not
poorly
the trains in the movie are a model of the trains Nazis used to transport Jews
The German soldiers were armed, the Jews were not. Moreover, the Jews had been subjected to malnourishment and persecution for a long time before they were forced on to the trains for the death camps.
Trains!
Most were transported by cattle trucks and trains.
cattle cars on trains.
They had to move them with trains and most Jews ran away. Either with boats or snuck away on foot!
Most Jews were brought to the Nazi Concentration camps using trains, shoving the Jews into cattle-cars to humiliate them.
Wherever they were told to; be it a ravine out of town, or on to trains to get gassed.
They were forced into trains which would take them literally days to get there.
If the question is asking about Jews in Nazi-Occupied Europe, then the answer was effectively: No. While Jews were moved between ghettos and concentration camps using trains, these were not trains that Jews chose to get on, nor were they humane, nor Jews did not have the choice of where they were going, and, finally, Jews were strictly forbidden from using general public transport. Outside of Nazi-Occupied Europe, Jews were generally able to use transportation, especially in the UK and USA.