Just purchased an 03 RR 2 days ago with 61k miles on it. Drove it 800 miles from Miami home to NC and within 20 mins of my house it started making a weird engine noise (almost like the tires were running on rough pavement). While doing this the battery light would flash a few times. A bad smell came thru the ac vents. The noise stop and I continued driving until it made a different noise and looked in the mirrors to see what looked like smoke coming out of the back of the truck. Again it stopped within 30 secs of starting. A few miles later the temperature light came on and the truck overheated. When pulling over to the side, I then noticed the power steering had gone out. Any thoughts? Please help!