2 weeks from the day I bought my new showroom floor 2011 GS Convertible the "service traction control" light came on. At the exact same time my entire engine started to shake, my gas pedal was barely working & there was tons of smoke coming out of my tailpipe. I pulled over immediately & shut the car off. I tried to turn it back on after a couple minutes & it wouldn't turn over. The engine started making loud clanking sounds & smoke started flowing down the road from my tailpipes. Eventually I ended up getting it towed and I was wondering if anyone knows what might be wrong w/ it & if I have a good chance of returning it since it has less than 500 miles on it.