I brought my 2008 VW Beetle S to my dealer for an oil change this morning. Once I left the dealership I drove about five miles and parked. As soon as I started the car back up the oil light started blinking, the skid notification light came permanently on, and the car beeped at me (three short beeps). I immediately headed back to the dealership, but was unable to drive over 40 mph without the car making horrible noises. The dealership looked briefly at the car and then told me that the oil was fine but that there was an electrical problem messing up all my sensors. "We'll give you a loaner and check it out". I'm not a big believer of coincidence, and am unconvinced they are telling me the truth. Is what they are claiming even possible, and if not what should I do next?