How to change local character into a link where the player is sitting on (seatpart)?

local character = game.Players.LocalPlayer.Character

game.ReplicatedStorage.Boost.OnServerEvent:Connect(function(player) character.Humanoid.SeatPart.Parent.Body.Interface.Values.Horsepower = character.Humanoid.SeatPart.Parent.Body.Interface.Values.Horsepower +10 if character.Humanoid.SeatPart.Parent.Body.Interface.Values.Horsepower == 510 then print("Boost works") end end)

How can I change local character to a link where the player is sitting on (so a seat part)