Vincent did not hire a coachman as he traveled with Tara to the eastern part of the kingdom.
Perhaps, if he's not together with a Celestial Being, he would even consider hiring a group of mercenaries to join him in his way. Not entirely because he's weak but it's because it's more convenient to be with people who know the geography and were well aware of the Savage Beasts or even Magic Beasts that they might encounter.
There is also another problem in which they might get targeted by bandits while on the road.
However, since he's together with Tara, he decided not to get more people involved in his matters as they might also realize Tara's real identity.
They have secrets they wanted to hide so traveling with just the two of them should be a better choice.
"Vincent…"
Tara called out from within the car.
"Tara? Is there a problem?" He asked as he continued looking at the road.
"No… I just want to ask if you're interested in visiting the near dungeon."