Hi! First of all, thanks for this mod, it's amazing! Now there's a request I would like to make that I think it would be a cool addition.

You see there's this bug that may or may not be intentional where if you place a car on the roof of the nether it won't run, but that keep me thinking... That would be actually a cool limitation if you were to add some "tunneling vehicle" and a "paving vehicle" were you could set up a custom decoration for the tunnel or road and as you move it places it, the main reason for this its that people like tp because doing those two in vanilla is extremely dull and a pain, specially in the nether with failling lava on your head all the time...

If there were an efficient and easy way to create roads I can see the creation of highways spawning all across the world.

Now due to balancing issues you could also void all the ores and material in the tunneling machine, so that if you want to create a luxurious highway / road, it will cost you and so that you can't cheat by using the tunneling vehicle as a quarry, that would allow you to make it quick and efficient, I don't know, maybe top speed of 10 m/s?