Wife drove my Z in 1st gear on the highway

2bits

I took deliver of my new 370z LAST NIGHT, and she drove it to work this morning. She leaves. Ten minutes later calls me on my cell to say the car is loud and lurching, and to ask what rpm she was supposed to stay under during break-in. I say we should try to stay under 4k, and she says "but then I'd only be going 20". Doh! I tell her to put it in D.

She had the engine running at around 7k rpm for a couple miles, and ultimately confessed that she smelled something burning.

Bottom line, what should I look out for? Do I have to worry about long term damage to the drivetrain? I assume the burning was something organic such as plastic, rubber, or fluid. Any ideas?

I've since driven it all day without issue. No smell at all. You'd never know, but it's eating me up until I find out what "burned".