Hi Amanda!
I'm a hardcore car dude, so I was really excited to see your question.
I was bummed that I couldn't make it to last year's Car Masters Weekend because I would've loved to have had the opportunity to meet Chip Foose. (I had a good excuse because were staying close to home and waiting for the birth of my son!) Not only do I dig his work, but I really dig his show and how he gives back to people who are so deserving.
From looking at last year's itinerary for the Car Masters Weekend, it looks like they planned it in typical Disney fashion with an awesome lineup of events, special guests, and other surprises.
Unfortunately, I haven't heard anything yet as whether this event will return for 2013. The best advice I can give is to keep a close eye on the
Disney Parks Blog. That's my go-to source for breaking news and updates that relate to what's going on in Walt Disney World. You can either subscribe via RSS feed if you use a blog reader, or you can subscribe via e-mail and have daily updates in your inbox each morning.
From one car lover to another, I'm hoping we'll see some good news come out very soon!
If you should have any other questions, please feel free to send them my way and I'll be happy to help in any way that I can!
Best regards,
Derek