Just had a very similar event happen to me. Just glad my little kids weren't in the car when it happened.
Have had the car since 12/2011 with no issues on the 2.11. Upgraded to 3.0 over the weekend with no issues during the install. This morning after stopping for breakfast, got back in the car, pushed the push start button and "holy crap, wtf is that noise?" The static was so loud I didn't know what was going on at 1st. Pushed the start button again the static wound down and the car started and resumed normal radio function. So, apparently the 3.0 update did not address this issue.