One of the things we wanted to do with jet car stunts was the saving of replay data... unfortunately, as you pointed out, non of the social APIs offer this yet. The game actually does save replay data with the hope that Openfeint at some point will allow data to be uploaded to the severs. What we really wanted was video output, and the only service that offers this is Cloudcell which is a closed off system at the moment.
Ground Effect saves the data for the best time on each level. This made adding Ghost races very simple which are really useful for knocking a few hundredths of a second off your best time. The player can also watch a replay of the best time, pause the replay at any point (for example just before a crash) and take over the controls. I'm not sure how much the testers used this but some of the best times we had are pretty impressive.
Although I did try the ghost feature, I never used it to beat track times. I always said to myself I would use it once I can't beat a best time, to figure out if I was missing out on a shortcut for instance... It would be really great if there is a way to make this data available as a challenge mode. Please Mr Citron...
Approved! After a very stressful 10 days wait Ground Effect has been approved by Apple and is in the App Store now! It's not showing up on any lists yet but here is the direct link: Ground Effect It feels really weird to see it actually in there
