How can I make the sound not stop when I hit npc?

Hello, good morning, I have the problem that when I hit a npc with the car it stops the sound of the engine and I know that it is because they have a humanoid. How can I do it to fix it?

Car.PrimaryPart.TouchEnded:Connect(function(touch)
    Ground.Touched:Connect(function(touch)
        if not debounce then
            debounce = true

            if touch.Parent:FindFirstChild('Humanoid') then
                soundEngine:Stop()
                fire.Enabled = false
            end
            wait(2)
            debounce = false
        end

    end)
end)