what is the best way to move a train? Seats Or CFraming?

So i want to make a train driving game, Would it be the best if i used RBLXS seat system or just make a long custom script that makes it drive? whats the best way to do it?

Using roblox vehicle seats may be bad for your game if you are attempting to make something like custom driving mechanics or custom uis for the vehicle, so i would just go with making a seat that activates some driving mechanic or ui when a character sits in it, refer to https://developer.roblox.com/en-us/api-reference/class/Seat for more info