>>25353707I'm pretty sure what I'm about to say is 100% bullshit but I'll say it anyway.
But, the truck seems to hold a big role in the game since it looks like you can personalize its colour (The same truck with different color on the concept art). Maybe you'll be able to ride it to go to places, but since the trainer will be obviously too young to drive, it might be some kind of driving ditto, or even a weird robot driving for the player, it's not the first time we see a human looking robot in Pokemon