[AlonzoTorres]

You want the player to surf on a vehicle without falling? Using setplayerposition would work but it would look like crap because even if you update every 10th of a second it would still lag. Using playervelocity does not change anything since you would have to update the velocity positioning if the vehicle change direction and also based on speed... Why do you even want a player to be able to do this? There is no native way to attach players to objects/vehicles.