[AurumReichert]

Registered to post this:
Last Friday I was driving to Tallahassee from Orlando in my '13 FrS. I was using cruise control at 71 miles an hour, everything was going well. Unfortunately, about 60 miles from Tallahassee, the car shuddered violently and displayed the check engine light and slip light simultaneously. Luckily this happened right next to a rest area so I coasted in and found a spot. When I stopped, before shifting to P, I noticed the engine was revving wildly. The revs would fluctuate between 500-1200 RPM and the car would lurch about as well. Oil was fine (recently replaced,) the coolant was fine, the engine didn't seem to be very hot, I couldn't really determine the issue.
Well, the car had trouble starting (took twice as long as usual, occasionally would not start) and also had no power at all in drive (automatic transmission.) Curiously, the car was fine in reverse.
I was quite perplexed as the car is essentially new, I bought it with around 2,000 miles on it from the local dealer and it now has close to 3,800.
I had the car towed to the dealer, and the next day the service consultant told me that there was an issue with the intake manifold (or something similar, I can't remember what exactly he said.) They are replacing it, but the part is on backorder.
Well, the car has been in the shop for about a week now, and I am unsure as to when I will see it again. Just thought I would post this here to potentially get some insight on the problem.
Edit: It's worth noting that the car is not drive-able, has no power whatsoever.