What do I do or press to enter a vehicle's surface?

Just stay near the side of it.

Just stay near the side of it.

And then do what? I stood beside the vehicle and nothing happed.
I have Krastorio 2 installed, does that mess with anything?

nvm figured it out.
for those who want to know:
1. if you placed a vehicle before installing the mod, you have to replace the vehicle.
2. enter the vehicle after replacing it so that it's yours.
3. enter the vehicle's surface by staying still right next to said vehicle.