[Envuks]

Sounds like your clutch is gone to me... It also sounds like you drive manual a little funny, i.e. In neutral @ 30 mph. Once, I had my car in neutral for like 20 / 30 seconds by accident on the highway and a dash warning came on. It shouldn't cause issues, but I also do not know for sure on these cars. The dash warning surprised the hell out of me.

I don't know why you turned off the car while driving then back on, I can only imagine it didn't like that very much. I would have pulled over or coasted to where I could do so.

I can't imagine a clutch is covered under warranty since it's a wear item. From the sounds of this post, I would infer that you may be driving the manual in a way that increases that wear... Sorry, no offense intended. Best of luck with the repair.