Travel in time? Is the Space is what we think?

After watching all episodes of Star Trek voyager, multiple thoughts came to my mind. Is it possible to travel speed of light. I think so it is possible logically.

If you observe the following pictures. The our galaxy(Imaginative pic) is a gigantic twist of space time. What if you jump from the twist little bit and moved into a low points.

Imagine you are in an infinite length train, and you managed to jump on to the platform, and ran along the train, but bit slower than train. Then you can cross the compartments faster and if you get onto the train again, you will be crossing many compartments/cars.

Idea: Run slow , relatively you are traveling as speed as the other object

3d view of the galaxy, thanks to MS Builder
3d view of the galaxy, thanks to MS Builder